Home / 7,225.20-9,979.20-4,863.60

Finding the Fourth Proportional to 7,225.20, 9,979.20 and 4,863.60

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Solution

The fourth proportional to 7,225.20, 9,979.20 and 4,863.60 is: 6,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.20 : 9,979.20 = 4,863.60 : x
  2. Step 2: Convert to fraction form
    7,225.20/9,979.20 = 4,863.60/x
  3. Step 3: Cross multiply
    7,225.20x = 9,979.20 × 4,863.60
  4. Step 4: Simplify right side
    7,225.20x = 48,534,837.12
  5. Step 5: Solve for x
    x = 48,534,837.12/7,225.20
  6. Step 6: Final answer
    x = 6,717.44

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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.