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Finding the Fourth Proportional to 8,901.81, 13,412.80 and 7,375.77

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Solution

The fourth proportional to 8,901.81, 13,412.80 and 7,375.77 is: 11,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.81 : 13,412.80 = 7,375.77 : x
  2. Step 2: Convert to fraction form
    8,901.81/13,412.80 = 7,375.77/x
  3. Step 3: Cross multiply
    8,901.81x = 13,412.80 × 7,375.77
  4. Step 4: Simplify right side
    8,901.81x = 98,929,709.42
  5. Step 5: Solve for x
    x = 98,929,709.42/8,901.81
  6. Step 6: Final answer
    x = 11,113.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.