Home / 5,169.91-7,134.55-2,931.74

Finding the Fourth Proportional to 5,169.91, 7,134.55 and 2,931.74

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Solution

The fourth proportional to 5,169.91, 7,134.55 and 2,931.74 is: 4,045.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.91 : 7,134.55 = 2,931.74 : x
  2. Step 2: Convert to fraction form
    5,169.91/7,134.55 = 2,931.74/x
  3. Step 3: Cross multiply
    5,169.91x = 7,134.55 × 2,931.74
  4. Step 4: Simplify right side
    5,169.91x = 20,916,645.62
  5. Step 5: Solve for x
    x = 20,916,645.62/5,169.91
  6. Step 6: Final answer
    x = 4,045.84

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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.