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Finding the Fourth Proportional to 3,877.86, 5,352.03 and 2,620.74

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Solution

The fourth proportional to 3,877.86, 5,352.03 and 2,620.74 is: 3,617.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.86 : 5,352.03 = 2,620.74 : x
  2. Step 2: Convert to fraction form
    3,877.86/5,352.03 = 2,620.74/x
  3. Step 3: Cross multiply
    3,877.86x = 5,352.03 × 2,620.74
  4. Step 4: Simplify right side
    3,877.86x = 14,026,279.10
  5. Step 5: Solve for x
    x = 14,026,279.10/3,877.86
  6. Step 6: Final answer
    x = 3,617.02

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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.