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Finding the Fourth Proportional to 8,987.84, 12,399.04 and 5,800.32

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Solution

The fourth proportional to 8,987.84, 12,399.04 and 5,800.32 is: 8,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.84 : 12,399.04 = 5,800.32 : x
  2. Step 2: Convert to fraction form
    8,987.84/12,399.04 = 5,800.32/x
  3. Step 3: Cross multiply
    8,987.84x = 12,399.04 × 5,800.32
  4. Step 4: Simplify right side
    8,987.84x = 71,918,399.69
  5. Step 5: Solve for x
    x = 71,918,399.69/8,987.84
  6. Step 6: Final answer
    x = 8,001.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.