Home / 5,142.44-7,715.28-2,543.55

Finding the Fourth Proportional to 5,142.44, 7,715.28 and 2,543.55

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Solution

The fourth proportional to 5,142.44, 7,715.28 and 2,543.55 is: 3,816.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.44 : 7,715.28 = 2,543.55 : x
  2. Step 2: Convert to fraction form
    5,142.44/7,715.28 = 2,543.55/x
  3. Step 3: Cross multiply
    5,142.44x = 7,715.28 × 2,543.55
  4. Step 4: Simplify right side
    5,142.44x = 19,624,200.44
  5. Step 5: Solve for x
    x = 19,624,200.44/5,142.44
  6. Step 6: Final answer
    x = 3,816.13

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1.5x scale

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.