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Finding the Fourth Proportional to 6,657.78, 9,187.43 and 3,823.16

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Solution

The fourth proportional to 6,657.78, 9,187.43 and 3,823.16 is: 5,275.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,657.78 : 9,187.43 = 3,823.16 : x
  2. Step 2: Convert to fraction form
    6,657.78/9,187.43 = 3,823.16/x
  3. Step 3: Cross multiply
    6,657.78x = 9,187.43 × 3,823.16
  4. Step 4: Simplify right side
    6,657.78x = 35,124,988.58
  5. Step 5: Solve for x
    x = 35,124,988.58/6,657.78
  6. Step 6: Final answer
    x = 5,275.78

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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.