Home / 1,685.10-2,324.18-1,125.39

Finding the Fourth Proportional to 1,685.10, 2,324.18 and 1,125.39

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Solution

The fourth proportional to 1,685.10, 2,324.18 and 1,125.39 is: 1,552.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.10 : 2,324.18 = 1,125.39 : x
  2. Step 2: Convert to fraction form
    1,685.10/2,324.18 = 1,125.39/x
  3. Step 3: Cross multiply
    1,685.10x = 2,324.18 × 1,125.39
  4. Step 4: Simplify right side
    1,685.10x = 2,615,603.30
  5. Step 5: Solve for x
    x = 2,615,603.30/1,685.10
  6. Step 6: Final answer
    x = 1,552.19

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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.