Home / 7,931.28-11,875.02-5,977.56

Finding the Fourth Proportional to 7,931.28, 11,875.02 and 5,977.56

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Solution

The fourth proportional to 7,931.28, 11,875.02 and 5,977.56 is: 8,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.28 : 11,875.02 = 5,977.56 : x
  2. Step 2: Convert to fraction form
    7,931.28/11,875.02 = 5,977.56/x
  3. Step 3: Cross multiply
    7,931.28x = 11,875.02 × 5,977.56
  4. Step 4: Simplify right side
    7,931.28x = 70,983,644.55
  5. Step 5: Solve for x
    x = 70,983,644.55/7,931.28
  6. Step 6: Final answer
    x = 8,949.83

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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.