Home / 7,937.30-10,921.28-6,515.76

Finding the Fourth Proportional to 7,937.30, 10,921.28 and 6,515.76

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Solution

The fourth proportional to 7,937.30, 10,921.28 and 6,515.76 is: 8,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.30 : 10,921.28 = 6,515.76 : x
  2. Step 2: Convert to fraction form
    7,937.30/10,921.28 = 6,515.76/x
  3. Step 3: Cross multiply
    7,937.30x = 10,921.28 × 6,515.76
  4. Step 4: Simplify right side
    7,937.30x = 71,160,439.37
  5. Step 5: Solve for x
    x = 71,160,439.37/7,937.30
  6. Step 6: Final answer
    x = 8,965.32

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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.