Home / 5,169.96-7,134.40-2,931.76

Finding the Fourth Proportional to 5,169.96, 7,134.40 and 2,931.76

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Solution

The fourth proportional to 5,169.96, 7,134.40 and 2,931.76 is: 4,045.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.96 : 7,134.40 = 2,931.76 : x
  2. Step 2: Convert to fraction form
    5,169.96/7,134.40 = 2,931.76/x
  3. Step 3: Cross multiply
    5,169.96x = 7,134.40 × 2,931.76
  4. Step 4: Simplify right side
    5,169.96x = 20,916,348.54
  5. Step 5: Solve for x
    x = 20,916,348.54/5,169.96
  6. Step 6: Final answer
    x = 4,045.75

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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.