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Finding the Fourth Proportional to 6,589.91, 9,885.38 and 1,909.99

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Solution

The fourth proportional to 6,589.91, 9,885.38 and 1,909.99 is: 2,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,589.91 : 9,885.38 = 1,909.99 : x
  2. Step 2: Convert to fraction form
    6,589.91/9,885.38 = 1,909.99/x
  3. Step 3: Cross multiply
    6,589.91x = 9,885.38 × 1,909.99
  4. Step 4: Simplify right side
    6,589.91x = 18,880,976.95
  5. Step 5: Solve for x
    x = 18,880,976.95/6,589.91
  6. Step 6: Final answer
    x = 2,865.13

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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.