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Finding the Fourth Proportional to 5,859.95, 8,790.02 and 1,911.20

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Solution

The fourth proportional to 5,859.95, 8,790.02 and 1,911.20 is: 2,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,859.95 : 8,790.02 = 1,911.20 : x
  2. Step 2: Convert to fraction form
    5,859.95/8,790.02 = 1,911.20/x
  3. Step 3: Cross multiply
    5,859.95x = 8,790.02 × 1,911.20
  4. Step 4: Simplify right side
    5,859.95x = 16,799,445.93
  5. Step 5: Solve for x
    x = 16,799,445.93/5,859.95
  6. Step 6: Final answer
    x = 2,866.82

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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.