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Finding the Fourth Proportional to 6,489.84, 9,721.66 and 6,153.59

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Solution

The fourth proportional to 6,489.84, 9,721.66 and 6,153.59 is: 9,217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.84 : 9,721.66 = 6,153.59 : x
  2. Step 2: Convert to fraction form
    6,489.84/9,721.66 = 6,153.59/x
  3. Step 3: Cross multiply
    6,489.84x = 9,721.66 × 6,153.59
  4. Step 4: Simplify right side
    6,489.84x = 59,823,045.77
  5. Step 5: Solve for x
    x = 59,823,045.77/6,489.84
  6. Step 6: Final answer
    x = 9,217.95

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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.