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Finding the Fourth Proportional to 6,153.98, 8,489.88 and 3,916.95

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Solution

The fourth proportional to 6,153.98, 8,489.88 and 3,916.95 is: 5,403.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,153.98 : 8,489.88 = 3,916.95 : x
  2. Step 2: Convert to fraction form
    6,153.98/8,489.88 = 3,916.95/x
  3. Step 3: Cross multiply
    6,153.98x = 8,489.88 × 3,916.95
  4. Step 4: Simplify right side
    6,153.98x = 33,254,435.47
  5. Step 5: Solve for x
    x = 33,254,435.47/6,153.98
  6. Step 6: Final answer
    x = 5,403.73

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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.