Home / 1,688.30-2,524.13-1,431.18

Finding the Fourth Proportional to 1,688.30, 2,524.13 and 1,431.18

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Solution

The fourth proportional to 1,688.30, 2,524.13 and 1,431.18 is: 2,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.30 : 2,524.13 = 1,431.18 : x
  2. Step 2: Convert to fraction form
    1,688.30/2,524.13 = 1,431.18/x
  3. Step 3: Cross multiply
    1,688.30x = 2,524.13 × 1,431.18
  4. Step 4: Simplify right side
    1,688.30x = 3,612,464.60
  5. Step 5: Solve for x
    x = 3,612,464.60/1,688.30
  6. Step 6: Final answer
    x = 2,139.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.