Home / 5,113.68-7,057.42-3,125.40

Finding the Fourth Proportional to 5,113.68, 7,057.42 and 3,125.40

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Solution

The fourth proportional to 5,113.68, 7,057.42 and 3,125.40 is: 4,313.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.68 : 7,057.42 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    5,113.68/7,057.42 = 3,125.40/x
  3. Step 3: Cross multiply
    5,113.68x = 7,057.42 × 3,125.40
  4. Step 4: Simplify right side
    5,113.68x = 22,057,260.47
  5. Step 5: Solve for x
    x = 22,057,260.47/5,113.68
  6. Step 6: Final answer
    x = 4,313.38

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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.