Home / 1,246.12-1,869.18-514.90

Finding the Fourth Proportional to 1,246.12, 1,869.18 and 514.90

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Solution

The fourth proportional to 1,246.12, 1,869.18 and 514.90 is: 772.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.12 : 1,869.18 = 514.90 : x
  2. Step 2: Convert to fraction form
    1,246.12/1,869.18 = 514.90/x
  3. Step 3: Cross multiply
    1,246.12x = 1,869.18 × 514.90
  4. Step 4: Simplify right side
    1,246.12x = 962,440.78
  5. Step 5: Solve for x
    x = 962,440.78/1,246.12
  6. Step 6: Final answer
    x = 772.35

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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.