Home / 5,239.04-7,229.76-3,142.40

Finding the Fourth Proportional to 5,239.04, 7,229.76 and 3,142.40

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Solution

The fourth proportional to 5,239.04, 7,229.76 and 3,142.40 is: 4,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.04 : 7,229.76 = 3,142.40 : x
  2. Step 2: Convert to fraction form
    5,239.04/7,229.76 = 3,142.40/x
  3. Step 3: Cross multiply
    5,239.04x = 7,229.76 × 3,142.40
  4. Step 4: Simplify right side
    5,239.04x = 22,718,797.82
  5. Step 5: Solve for x
    x = 22,718,797.82/5,239.04
  6. Step 6: Final answer
    x = 4,336.44

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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.