Home / 1,688.57-2,330.22-1,025.29

Finding the Fourth Proportional to 1,688.57, 2,330.22 and 1,025.29

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Solution

The fourth proportional to 1,688.57, 2,330.22 and 1,025.29 is: 1,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.57 : 2,330.22 = 1,025.29 : x
  2. Step 2: Convert to fraction form
    1,688.57/2,330.22 = 1,025.29/x
  3. Step 3: Cross multiply
    1,688.57x = 2,330.22 × 1,025.29
  4. Step 4: Simplify right side
    1,688.57x = 2,389,146.14
  5. Step 5: Solve for x
    x = 2,389,146.14/1,688.57
  6. Step 6: Final answer
    x = 1,414.90

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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.