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Finding the Fourth Proportional to 6,431.13, 8,865.45 and 4,536.54

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Solution

The fourth proportional to 6,431.13, 8,865.45 and 4,536.54 is: 6,253.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.13 : 8,865.45 = 4,536.54 : x
  2. Step 2: Convert to fraction form
    6,431.13/8,865.45 = 4,536.54/x
  3. Step 3: Cross multiply
    6,431.13x = 8,865.45 × 4,536.54
  4. Step 4: Simplify right side
    6,431.13x = 40,218,468.54
  5. Step 5: Solve for x
    x = 40,218,468.54/6,431.13
  6. Step 6: Final answer
    x = 6,253.72

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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.