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Finding the Fourth Proportional to 5,920.88, 8,881.38 and 1,760.78

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Solution

The fourth proportional to 5,920.88, 8,881.38 and 1,760.78 is: 2,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.88 : 8,881.38 = 1,760.78 : x
  2. Step 2: Convert to fraction form
    5,920.88/8,881.38 = 1,760.78/x
  3. Step 3: Cross multiply
    5,920.88x = 8,881.38 × 1,760.78
  4. Step 4: Simplify right side
    5,920.88x = 15,638,111.87
  5. Step 5: Solve for x
    x = 15,638,111.87/5,920.88
  6. Step 6: Final answer
    x = 2,641.18

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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.