Home / 7,764.60-10,711.68-5,178.14

Finding the Fourth Proportional to 7,764.60, 10,711.68 and 5,178.14

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Solution

The fourth proportional to 7,764.60, 10,711.68 and 5,178.14 is: 7,143.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.60 : 10,711.68 = 5,178.14 : x
  2. Step 2: Convert to fraction form
    7,764.60/10,711.68 = 5,178.14/x
  3. Step 3: Cross multiply
    7,764.60x = 10,711.68 × 5,178.14
  4. Step 4: Simplify right side
    7,764.60x = 55,466,578.68
  5. Step 5: Solve for x
    x = 55,466,578.68/7,764.60
  6. Step 6: Final answer
    x = 7,143.52

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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.