Home / 9,881.40-13,635.74-5,631.86

Finding the Fourth Proportional to 9,881.40, 13,635.74 and 5,631.86

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Solution

The fourth proportional to 9,881.40, 13,635.74 and 5,631.86 is: 7,771.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881.40 : 13,635.74 = 5,631.86 : x
  2. Step 2: Convert to fraction form
    9,881.40/13,635.74 = 5,631.86/x
  3. Step 3: Cross multiply
    9,881.40x = 13,635.74 × 5,631.86
  4. Step 4: Simplify right side
    9,881.40x = 76,794,578.68
  5. Step 5: Solve for x
    x = 76,794,578.68/9,881.40
  6. Step 6: Final answer
    x = 7,771.63

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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.