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Finding the Fourth Proportional to 8,799.40, 12,142.02 and 5,261.32

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Solution

The fourth proportional to 8,799.40, 12,142.02 and 5,261.32 is: 7,259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.40 : 12,142.02 = 5,261.32 : x
  2. Step 2: Convert to fraction form
    8,799.40/12,142.02 = 5,261.32/x
  3. Step 3: Cross multiply
    8,799.40x = 12,142.02 × 5,261.32
  4. Step 4: Simplify right side
    8,799.40x = 63,883,052.67
  5. Step 5: Solve for x
    x = 63,883,052.67/8,799.40
  6. Step 6: Final answer
    x = 7,259.93

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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.