Home / 10,417.20-15,625.80-3,491.70

Finding the Fourth Proportional to 10,417.20, 15,625.80 and 3,491.70

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Solution

The fourth proportional to 10,417.20, 15,625.80 and 3,491.70 is: 5,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,417.20 : 15,625.80 = 3,491.70 : x
  2. Step 2: Convert to fraction form
    10,417.20/15,625.80 = 3,491.70/x
  3. Step 3: Cross multiply
    10,417.20x = 15,625.80 × 3,491.70
  4. Step 4: Simplify right side
    10,417.20x = 54,560,605.86
  5. Step 5: Solve for x
    x = 54,560,605.86/10,417.20
  6. Step 6: Final answer
    x = 5,237.55

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1.5x scale

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.