Home / 1,417.46-2,123.75-1,125.86

Finding the Fourth Proportional to 1,417.46, 2,123.75 and 1,125.86

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Solution

The fourth proportional to 1,417.46, 2,123.75 and 1,125.86 is: 1,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.46 : 2,123.75 = 1,125.86 : x
  2. Step 2: Convert to fraction form
    1,417.46/2,123.75 = 1,125.86/x
  3. Step 3: Cross multiply
    1,417.46x = 2,123.75 × 1,125.86
  4. Step 4: Simplify right side
    1,417.46x = 2,391,028.93
  5. Step 5: Solve for x
    x = 2,391,028.93/1,417.46
  6. Step 6: Final answer
    x = 1,686.85

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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.