Home / 5,139.06-7,711.65-2,217.30

Finding the Fourth Proportional to 5,139.06, 7,711.65 and 2,217.30

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Solution

The fourth proportional to 5,139.06, 7,711.65 and 2,217.30 is: 3,327.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.06 : 7,711.65 = 2,217.30 : x
  2. Step 2: Convert to fraction form
    5,139.06/7,711.65 = 2,217.30/x
  3. Step 3: Cross multiply
    5,139.06x = 7,711.65 × 2,217.30
  4. Step 4: Simplify right side
    5,139.06x = 17,099,041.55
  5. Step 5: Solve for x
    x = 17,099,041.55/5,139.06
  6. Step 6: Final answer
    x = 3,327.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.