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Finding the Fourth Proportional to 8,775.81, 13,158.86 and 2,929.23

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Solution

The fourth proportional to 8,775.81, 13,158.86 and 2,929.23 is: 4,392.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.81 : 13,158.86 = 2,929.23 : x
  2. Step 2: Convert to fraction form
    8,775.81/13,158.86 = 2,929.23/x
  3. Step 3: Cross multiply
    8,775.81x = 13,158.86 × 2,929.23
  4. Step 4: Simplify right side
    8,775.81x = 38,545,312.83
  5. Step 5: Solve for x
    x = 38,545,312.83/8,775.81
  6. Step 6: Final answer
    x = 4,392.22

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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.