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Finding the Fourth Proportional to 8,018.64, 11,070.92 and 7,177.89

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Solution

The fourth proportional to 8,018.64, 11,070.92 and 7,177.89 is: 9,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,018.64 : 11,070.92 = 7,177.89 : x
  2. Step 2: Convert to fraction form
    8,018.64/11,070.92 = 7,177.89/x
  3. Step 3: Cross multiply
    8,018.64x = 11,070.92 × 7,177.89
  4. Step 4: Simplify right side
    8,018.64x = 79,465,811.50
  5. Step 5: Solve for x
    x = 79,465,811.50/8,018.64
  6. Step 6: Final answer
    x = 9,910.13

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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.