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Finding the Fourth Proportional to 5,878.76, 8,817.96 and 2,180.90

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Solution

The fourth proportional to 5,878.76, 8,817.96 and 2,180.90 is: 3,271.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,878.76 : 8,817.96 = 2,180.90 : x
  2. Step 2: Convert to fraction form
    5,878.76/8,817.96 = 2,180.90/x
  3. Step 3: Cross multiply
    5,878.76x = 8,817.96 × 2,180.90
  4. Step 4: Simplify right side
    5,878.76x = 19,231,088.96
  5. Step 5: Solve for x
    x = 19,231,088.96/5,878.76
  6. Step 6: Final answer
    x = 3,271.28

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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.