Home / 3,711.24-5,120.28-2,649.20

Finding the Fourth Proportional to 3,711.24, 5,120.28 and 2,649.20

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Solution

The fourth proportional to 3,711.24, 5,120.28 and 2,649.20 is: 3,655.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.24 : 5,120.28 = 2,649.20 : x
  2. Step 2: Convert to fraction form
    3,711.24/5,120.28 = 2,649.20/x
  3. Step 3: Cross multiply
    3,711.24x = 5,120.28 × 2,649.20
  4. Step 4: Simplify right side
    3,711.24x = 13,564,620.17
  5. Step 5: Solve for x
    x = 13,564,620.17/3,711.24
  6. Step 6: Final answer
    x = 3,655.01

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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.