Home / 5,177.92-7,145.64-2,909.20

Finding the Fourth Proportional to 5,177.92, 7,145.64 and 2,909.20

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Solution

The fourth proportional to 5,177.92, 7,145.64 and 2,909.20 is: 4,014.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.92 : 7,145.64 = 2,909.20 : x
  2. Step 2: Convert to fraction form
    5,177.92/7,145.64 = 2,909.20/x
  3. Step 3: Cross multiply
    5,177.92x = 7,145.64 × 2,909.20
  4. Step 4: Simplify right side
    5,177.92x = 20,788,095.89
  5. Step 5: Solve for x
    x = 20,788,095.89/5,177.92
  6. Step 6: Final answer
    x = 4,014.76

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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.