Home / 1,685.21-2,326.20-1,154.39

Finding the Fourth Proportional to 1,685.21, 2,326.20 and 1,154.39

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Solution

The fourth proportional to 1,685.21, 2,326.20 and 1,154.39 is: 1,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.21 : 2,326.20 = 1,154.39 : x
  2. Step 2: Convert to fraction form
    1,685.21/2,326.20 = 1,154.39/x
  3. Step 3: Cross multiply
    1,685.21x = 2,326.20 × 1,154.39
  4. Step 4: Simplify right side
    1,685.21x = 2,685,342.02
  5. Step 5: Solve for x
    x = 2,685,342.02/1,685.21
  6. Step 6: Final answer
    x = 1,593.48

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Double scale
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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.