Home / 7,319.60-10,979.40-4,695.20

Finding the Fourth Proportional to 7,319.60, 10,979.40 and 4,695.20

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Solution

The fourth proportional to 7,319.60, 10,979.40 and 4,695.20 is: 7,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.60 : 10,979.40 = 4,695.20 : x
  2. Step 2: Convert to fraction form
    7,319.60/10,979.40 = 4,695.20/x
  3. Step 3: Cross multiply
    7,319.60x = 10,979.40 × 4,695.20
  4. Step 4: Simplify right side
    7,319.60x = 51,550,478.88
  5. Step 5: Solve for x
    x = 51,550,478.88/7,319.60
  6. Step 6: Final answer
    x = 7,042.80

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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.