Home / 1,688.55-2,330.07-1,025.31

Finding the Fourth Proportional to 1,688.55, 2,330.07 and 1,025.31

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Solution

The fourth proportional to 1,688.55, 2,330.07 and 1,025.31 is: 1,414.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.55 : 2,330.07 = 1,025.31 : x
  2. Step 2: Convert to fraction form
    1,688.55/2,330.07 = 1,025.31/x
  3. Step 3: Cross multiply
    1,688.55x = 2,330.07 × 1,025.31
  4. Step 4: Simplify right side
    1,688.55x = 2,389,035.86
  5. Step 5: Solve for x
    x = 2,389,035.86/1,688.55
  6. Step 6: Final answer
    x = 1,414.85

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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.