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Finding the Fourth Proportional to 9,239.64, 12,750.84 and 5,047.92

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Solution

The fourth proportional to 9,239.64, 12,750.84 and 5,047.92 is: 6,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,239.64 : 12,750.84 = 5,047.92 : x
  2. Step 2: Convert to fraction form
    9,239.64/12,750.84 = 5,047.92/x
  3. Step 3: Cross multiply
    9,239.64x = 12,750.84 × 5,047.92
  4. Step 4: Simplify right side
    9,239.64x = 64,365,220.25
  5. Step 5: Solve for x
    x = 64,365,220.25/9,239.64
  6. Step 6: Final answer
    x = 6,966.20

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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.