Home / 5,130.59-7,079.67-2,892.80

Finding the Fourth Proportional to 5,130.59, 7,079.67 and 2,892.80

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Solution

The fourth proportional to 5,130.59, 7,079.67 and 2,892.80 is: 3,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.59 : 7,079.67 = 2,892.80 : x
  2. Step 2: Convert to fraction form
    5,130.59/7,079.67 = 2,892.80/x
  3. Step 3: Cross multiply
    5,130.59x = 7,079.67 × 2,892.80
  4. Step 4: Simplify right side
    5,130.59x = 20,480,087.08
  5. Step 5: Solve for x
    x = 20,480,087.08/5,130.59
  6. Step 6: Final answer
    x = 3,991.76

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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.