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Finding the Fourth Proportional to 8,807.79, 13,220.37 and 5,988

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Solution

The fourth proportional to 8,807.79, 13,220.37 and 5,988 is: 8,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.79 : 13,220.37 = 5,988 : x
  2. Step 2: Convert to fraction form
    8,807.79/13,220.37 = 5,988/x
  3. Step 3: Cross multiply
    8,807.79x = 13,220.37 × 5,988
  4. Step 4: Simplify right side
    8,807.79x = 79,163,575.56
  5. Step 5: Solve for x
    x = 79,163,575.56/8,807.79
  6. Step 6: Final answer
    x = 8,987.90

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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.