Home / 1,397.50-1,932.19-1,336.30

Finding the Fourth Proportional to 1,397.50, 1,932.19 and 1,336.30

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Solution

The fourth proportional to 1,397.50, 1,932.19 and 1,336.30 is: 1,847.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.50 : 1,932.19 = 1,336.30 : x
  2. Step 2: Convert to fraction form
    1,397.50/1,932.19 = 1,336.30/x
  3. Step 3: Cross multiply
    1,397.50x = 1,932.19 × 1,336.30
  4. Step 4: Simplify right side
    1,397.50x = 2,581,985.50
  5. Step 5: Solve for x
    x = 2,581,985.50/1,397.50
  6. Step 6: Final answer
    x = 1,847.57

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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.