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Finding the Fourth Proportional to 8,780.51, 13,168.01 and 2,935.76

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Solution

The fourth proportional to 8,780.51, 13,168.01 and 2,935.76 is: 4,402.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.51 : 13,168.01 = 2,935.76 : x
  2. Step 2: Convert to fraction form
    8,780.51/13,168.01 = 2,935.76/x
  3. Step 3: Cross multiply
    8,780.51x = 13,168.01 × 2,935.76
  4. Step 4: Simplify right side
    8,780.51x = 38,658,036.52
  5. Step 5: Solve for x
    x = 38,658,036.52/8,780.51
  6. Step 6: Final answer
    x = 4,402.71

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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.