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Finding the Fourth Proportional to 6,405.66, 8,839.44 and 3,572.82

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Solution

The fourth proportional to 6,405.66, 8,839.44 and 3,572.82 is: 4,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.66 : 8,839.44 = 3,572.82 : x
  2. Step 2: Convert to fraction form
    6,405.66/8,839.44 = 3,572.82/x
  3. Step 3: Cross multiply
    6,405.66x = 8,839.44 × 3,572.82
  4. Step 4: Simplify right side
    6,405.66x = 31,581,728.02
  5. Step 5: Solve for x
    x = 31,581,728.02/6,405.66
  6. Step 6: Final answer
    x = 4,930.28

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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.