Home / 7,964.95-10,991.57-4,428.13

Finding the Fourth Proportional to 7,964.95, 10,991.57 and 4,428.13

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Solution

The fourth proportional to 7,964.95, 10,991.57 and 4,428.13 is: 6,110.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.95 : 10,991.57 = 4,428.13 : x
  2. Step 2: Convert to fraction form
    7,964.95/10,991.57 = 4,428.13/x
  3. Step 3: Cross multiply
    7,964.95x = 10,991.57 × 4,428.13
  4. Step 4: Simplify right side
    7,964.95x = 48,672,023.77
  5. Step 5: Solve for x
    x = 48,672,023.77/7,964.95
  6. Step 6: Final answer
    x = 6,110.78

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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.