Home / 5,130.27-7,079.81-2,891.93

Finding the Fourth Proportional to 5,130.27, 7,079.81 and 2,891.93

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Solution

The fourth proportional to 5,130.27, 7,079.81 and 2,891.93 is: 3,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.27 : 7,079.81 = 2,891.93 : x
  2. Step 2: Convert to fraction form
    5,130.27/7,079.81 = 2,891.93/x
  3. Step 3: Cross multiply
    5,130.27x = 7,079.81 × 2,891.93
  4. Step 4: Simplify right side
    5,130.27x = 20,474,265.07
  5. Step 5: Solve for x
    x = 20,474,265.07/5,130.27
  6. Step 6: Final answer
    x = 3,990.87

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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.