Home / 5,279.99-7,287.23-3,155.63

Finding the Fourth Proportional to 5,279.99, 7,287.23 and 3,155.63

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Solution

The fourth proportional to 5,279.99, 7,287.23 and 3,155.63 is: 4,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.99 : 7,287.23 = 3,155.63 : x
  2. Step 2: Convert to fraction form
    5,279.99/7,287.23 = 3,155.63/x
  3. Step 3: Cross multiply
    5,279.99x = 7,287.23 × 3,155.63
  4. Step 4: Simplify right side
    5,279.99x = 22,995,773.06
  5. Step 5: Solve for x
    x = 22,995,773.06/5,279.99
  6. Step 6: Final answer
    x = 4,355.27

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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.