Home / 6,319.47-8,721.42-3,487.11

Finding the Fourth Proportional to 6,319.47, 8,721.42 and 3,487.11

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Solution

The fourth proportional to 6,319.47, 8,721.42 and 3,487.11 is: 4,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,319.47 : 8,721.42 = 3,487.11 : x
  2. Step 2: Convert to fraction form
    6,319.47/8,721.42 = 3,487.11/x
  3. Step 3: Cross multiply
    6,319.47x = 8,721.42 × 3,487.11
  4. Step 4: Simplify right side
    6,319.47x = 30,412,550.90
  5. Step 5: Solve for x
    x = 30,412,550.90/6,319.47
  6. Step 6: Final answer
    x = 4,812.52

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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.