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Finding the Fourth Proportional to 8,799.66, 12,139.47 and 5,071.50

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Solution

The fourth proportional to 8,799.66, 12,139.47 and 5,071.50 is: 6,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.66 : 12,139.47 = 5,071.50 : x
  2. Step 2: Convert to fraction form
    8,799.66/12,139.47 = 5,071.50/x
  3. Step 3: Cross multiply
    8,799.66x = 12,139.47 × 5,071.50
  4. Step 4: Simplify right side
    8,799.66x = 61,565,322.11
  5. Step 5: Solve for x
    x = 61,565,322.11/8,799.66
  6. Step 6: Final answer
    x = 6,996.33

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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.