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Finding the Fourth Proportional to 8,741.90, 13,112.98 and 4,870.91

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Solution

The fourth proportional to 8,741.90, 13,112.98 and 4,870.91 is: 7,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,741.90 : 13,112.98 = 4,870.91 : x
  2. Step 2: Convert to fraction form
    8,741.90/13,112.98 = 4,870.91/x
  3. Step 3: Cross multiply
    8,741.90x = 13,112.98 × 4,870.91
  4. Step 4: Simplify right side
    8,741.90x = 63,872,067.67
  5. Step 5: Solve for x
    x = 63,872,067.67/8,741.90
  6. Step 6: Final answer
    x = 7,306.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.