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Finding the Fourth Proportional to 8,875.76, 13,322.30 and 3,948.63

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Solution

The fourth proportional to 8,875.76, 13,322.30 and 3,948.63 is: 5,926.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875.76 : 13,322.30 = 3,948.63 : x
  2. Step 2: Convert to fraction form
    8,875.76/13,322.30 = 3,948.63/x
  3. Step 3: Cross multiply
    8,875.76x = 13,322.30 × 3,948.63
  4. Step 4: Simplify right side
    8,875.76x = 52,604,813.71
  5. Step 5: Solve for x
    x = 52,604,813.71/8,875.76
  6. Step 6: Final answer
    x = 5,926.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.