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Finding the Fourth Proportional to 7,977.66, 11,008.95 and 4,440.78

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Solution

The fourth proportional to 7,977.66, 11,008.95 and 4,440.78 is: 6,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.66 : 11,008.95 = 4,440.78 : x
  2. Step 2: Convert to fraction form
    7,977.66/11,008.95 = 4,440.78/x
  3. Step 3: Cross multiply
    7,977.66x = 11,008.95 × 4,440.78
  4. Step 4: Simplify right side
    7,977.66x = 48,888,324.98
  5. Step 5: Solve for x
    x = 48,888,324.98/7,977.66
  6. Step 6: Final answer
    x = 6,128.15

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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.