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Finding the Fourth Proportional to 6,287.90, 8,677.60 and 3,493.40

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Solution

The fourth proportional to 6,287.90, 8,677.60 and 3,493.40 is: 4,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.90 : 8,677.60 = 3,493.40 : x
  2. Step 2: Convert to fraction form
    6,287.90/8,677.60 = 3,493.40/x
  3. Step 3: Cross multiply
    6,287.90x = 8,677.60 × 3,493.40
  4. Step 4: Simplify right side
    6,287.90x = 30,314,275.72
  5. Step 5: Solve for x
    x = 30,314,275.72/6,287.90
  6. Step 6: Final answer
    x = 4,821.05

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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.