Home / 5,130.74-7,079.91-3,141.86

Finding the Fourth Proportional to 5,130.74, 7,079.91 and 3,141.86

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Solution

The fourth proportional to 5,130.74, 7,079.91 and 3,141.86 is: 4,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.74 : 7,079.91 = 3,141.86 : x
  2. Step 2: Convert to fraction form
    5,130.74/7,079.91 = 3,141.86/x
  3. Step 3: Cross multiply
    5,130.74x = 7,079.91 × 3,141.86
  4. Step 4: Simplify right side
    5,130.74x = 22,244,086.03
  5. Step 5: Solve for x
    x = 22,244,086.03/5,130.74
  6. Step 6: Final answer
    x = 4,335.45

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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.