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Finding the Fourth Proportional to 8,799.81, 12,158.94 and 8,484.51

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Solution

The fourth proportional to 8,799.81, 12,158.94 and 8,484.51 is: 11,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.81 : 12,158.94 = 8,484.51 : x
  2. Step 2: Convert to fraction form
    8,799.81/12,158.94 = 8,484.51/x
  3. Step 3: Cross multiply
    8,799.81x = 12,158.94 × 8,484.51
  4. Step 4: Simplify right side
    8,799.81x = 103,162,648.02
  5. Step 5: Solve for x
    x = 103,162,648.02/8,799.81
  6. Step 6: Final answer
    x = 11,723.28

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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.