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Finding the Fourth Proportional to 9,888.84, 13,640.66 and 6,531.66

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Solution

The fourth proportional to 9,888.84, 13,640.66 and 6,531.66 is: 9,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.84 : 13,640.66 = 6,531.66 : x
  2. Step 2: Convert to fraction form
    9,888.84/13,640.66 = 6,531.66/x
  3. Step 3: Cross multiply
    9,888.84x = 13,640.66 × 6,531.66
  4. Step 4: Simplify right side
    9,888.84x = 89,096,153.30
  5. Step 5: Solve for x
    x = 89,096,153.30/9,888.84
  6. Step 6: Final answer
    x = 9,009.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.