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Finding the Fourth Proportional to 11,290.66, 15,580.82 and 6,254.78

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Solution

The fourth proportional to 11,290.66, 15,580.82 and 6,254.78 is: 8,631.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.66 : 15,580.82 = 6,254.78 : x
  2. Step 2: Convert to fraction form
    11,290.66/15,580.82 = 6,254.78/x
  3. Step 3: Cross multiply
    11,290.66x = 15,580.82 × 6,254.78
  4. Step 4: Simplify right side
    11,290.66x = 97,454,539.05
  5. Step 5: Solve for x
    x = 97,454,539.05/11,290.66
  6. Step 6: Final answer
    x = 8,631.43

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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.