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Finding the Fourth Proportional to 8,721.95, 13,081.10 and 2,877.19

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Solution

The fourth proportional to 8,721.95, 13,081.10 and 2,877.19 is: 4,315.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.95 : 13,081.10 = 2,877.19 : x
  2. Step 2: Convert to fraction form
    8,721.95/13,081.10 = 2,877.19/x
  3. Step 3: Cross multiply
    8,721.95x = 13,081.10 × 2,877.19
  4. Step 4: Simplify right side
    8,721.95x = 37,636,763.02
  5. Step 5: Solve for x
    x = 37,636,763.02/8,721.95
  6. Step 6: Final answer
    x = 4,315.18

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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.