Home / 7,230.36-9,979.38-4,247.76

Finding the Fourth Proportional to 7,230.36, 9,979.38 and 4,247.76

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Solution

The fourth proportional to 7,230.36, 9,979.38 and 4,247.76 is: 5,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.36 : 9,979.38 = 4,247.76 : x
  2. Step 2: Convert to fraction form
    7,230.36/9,979.38 = 4,247.76/x
  3. Step 3: Cross multiply
    7,230.36x = 9,979.38 × 4,247.76
  4. Step 4: Simplify right side
    7,230.36x = 42,390,011.19
  5. Step 5: Solve for x
    x = 42,390,011.19/7,230.36
  6. Step 6: Final answer
    x = 5,862.78

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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.