Home / 8,385.69-11,572.94-5,407.72

Finding the Fourth Proportional to 8,385.69, 11,572.94 and 5,407.72

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Solution

The fourth proportional to 8,385.69, 11,572.94 and 5,407.72 is: 7,463.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.69 : 11,572.94 = 5,407.72 : x
  2. Step 2: Convert to fraction form
    8,385.69/11,572.94 = 5,407.72/x
  3. Step 3: Cross multiply
    8,385.69x = 11,572.94 × 5,407.72
  4. Step 4: Simplify right side
    8,385.69x = 62,583,219.10
  5. Step 5: Solve for x
    x = 62,583,219.10/8,385.69
  6. Step 6: Final answer
    x = 7,463.10

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1.5x scale

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.