Home / 5,711.09-7,881.47-3,158.88

Finding the Fourth Proportional to 5,711.09, 7,881.47 and 3,158.88

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Solution

The fourth proportional to 5,711.09, 7,881.47 and 3,158.88 is: 4,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.09 : 7,881.47 = 3,158.88 : x
  2. Step 2: Convert to fraction form
    5,711.09/7,881.47 = 3,158.88/x
  3. Step 3: Cross multiply
    5,711.09x = 7,881.47 × 3,158.88
  4. Step 4: Simplify right side
    5,711.09x = 24,896,584.45
  5. Step 5: Solve for x
    x = 24,896,584.45/5,711.09
  6. Step 6: Final answer
    x = 4,359.34

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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.