Home / 7,057.20-9,738.52-3,913.20

Finding the Fourth Proportional to 7,057.20, 9,738.52 and 3,913.20

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Solution

The fourth proportional to 7,057.20, 9,738.52 and 3,913.20 is: 5,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.20 : 9,738.52 = 3,913.20 : x
  2. Step 2: Convert to fraction form
    7,057.20/9,738.52 = 3,913.20/x
  3. Step 3: Cross multiply
    7,057.20x = 9,738.52 × 3,913.20
  4. Step 4: Simplify right side
    7,057.20x = 38,108,776.46
  5. Step 5: Solve for x
    x = 38,108,776.46/7,057.20
  6. Step 6: Final answer
    x = 5,399.99

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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.