Home / 5,130.04-7,079.37-2,891.92

Finding the Fourth Proportional to 5,130.04, 7,079.37 and 2,891.92

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Solution

The fourth proportional to 5,130.04, 7,079.37 and 2,891.92 is: 3,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.04 : 7,079.37 = 2,891.92 : x
  2. Step 2: Convert to fraction form
    5,130.04/7,079.37 = 2,891.92/x
  3. Step 3: Cross multiply
    5,130.04x = 7,079.37 × 2,891.92
  4. Step 4: Simplify right side
    5,130.04x = 20,472,971.69
  5. Step 5: Solve for x
    x = 20,472,971.69/5,130.04
  6. Step 6: Final answer
    x = 3,990.80

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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.