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Finding the Fourth Proportional to 8,549.08, 12,751.79 and 7,761.64

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Solution

The fourth proportional to 8,549.08, 12,751.79 and 7,761.64 is: 11,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.08 : 12,751.79 = 7,761.64 : x
  2. Step 2: Convert to fraction form
    8,549.08/12,751.79 = 7,761.64/x
  3. Step 3: Cross multiply
    8,549.08x = 12,751.79 × 7,761.64
  4. Step 4: Simplify right side
    8,549.08x = 98,974,803.34
  5. Step 5: Solve for x
    x = 98,974,803.34/8,549.08
  6. Step 6: Final answer
    x = 11,577.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.