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Finding the Fourth Proportional to 9,882, 13,639.19 and 5,690.25

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Solution

The fourth proportional to 9,882, 13,639.19 and 5,690.25 is: 7,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,882 : 13,639.19 = 5,690.25 : x
  2. Step 2: Convert to fraction form
    9,882/13,639.19 = 5,690.25/x
  3. Step 3: Cross multiply
    9,882x = 13,639.19 × 5,690.25
  4. Step 4: Simplify right side
    9,882x = 77,610,372.45
  5. Step 5: Solve for x
    x = 77,610,372.45/9,882
  6. Step 6: Final answer
    x = 7,853.71

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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.