Home / 5,140.84-7,711.27-3,972.55

Finding the Fourth Proportional to 5,140.84, 7,711.27 and 3,972.55

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Solution

The fourth proportional to 5,140.84, 7,711.27 and 3,972.55 is: 5,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.84 : 7,711.27 = 3,972.55 : x
  2. Step 2: Convert to fraction form
    5,140.84/7,711.27 = 3,972.55/x
  3. Step 3: Cross multiply
    5,140.84x = 7,711.27 × 3,972.55
  4. Step 4: Simplify right side
    5,140.84x = 30,633,347.22
  5. Step 5: Solve for x
    x = 30,633,347.22/5,140.84
  6. Step 6: Final answer
    x = 5,958.82

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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.