Home / 8,769.78-13,157.76-5,479.02

Finding the Fourth Proportional to 8,769.78, 13,157.76 and 5,479.02

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Solution

The fourth proportional to 8,769.78, 13,157.76 and 5,479.02 is: 8,220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.78 : 13,157.76 = 5,479.02 : x
  2. Step 2: Convert to fraction form
    8,769.78/13,157.76 = 5,479.02/x
  3. Step 3: Cross multiply
    8,769.78x = 13,157.76 × 5,479.02
  4. Step 4: Simplify right side
    8,769.78x = 72,091,630.20
  5. Step 5: Solve for x
    x = 72,091,630.20/8,769.78
  6. Step 6: Final answer
    x = 8,220.46

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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.