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Finding the Fourth Proportional to 9,165.56, 12,648.36 and 4,973.78

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Solution

The fourth proportional to 9,165.56, 12,648.36 and 4,973.78 is: 6,863.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.56 : 12,648.36 = 4,973.78 : x
  2. Step 2: Convert to fraction form
    9,165.56/12,648.36 = 4,973.78/x
  3. Step 3: Cross multiply
    9,165.56x = 12,648.36 × 4,973.78
  4. Step 4: Simplify right side
    9,165.56x = 62,910,160.00
  5. Step 5: Solve for x
    x = 62,910,160.00/9,165.56
  6. Step 6: Final answer
    x = 6,863.76

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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.