Home / 1,685.78-2,325.33-1,154.42

Finding the Fourth Proportional to 1,685.78, 2,325.33 and 1,154.42

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Solution

The fourth proportional to 1,685.78, 2,325.33 and 1,154.42 is: 1,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.78 : 2,325.33 = 1,154.42 : x
  2. Step 2: Convert to fraction form
    1,685.78/2,325.33 = 1,154.42/x
  3. Step 3: Cross multiply
    1,685.78x = 2,325.33 × 1,154.42
  4. Step 4: Simplify right side
    1,685.78x = 2,684,407.46
  5. Step 5: Solve for x
    x = 2,684,407.46/1,685.78
  6. Step 6: Final answer
    x = 1,592.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,686.78, 2,326.71 and 1,155.42
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.