Home / 8,681.68-11,983.85-5,698.18

Finding the Fourth Proportional to 8,681.68, 11,983.85 and 5,698.18

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Solution

The fourth proportional to 8,681.68, 11,983.85 and 5,698.18 is: 7,865.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.68 : 11,983.85 = 5,698.18 : x
  2. Step 2: Convert to fraction form
    8,681.68/11,983.85 = 5,698.18/x
  3. Step 3: Cross multiply
    8,681.68x = 11,983.85 × 5,698.18
  4. Step 4: Simplify right side
    8,681.68x = 68,286,134.39
  5. Step 5: Solve for x
    x = 68,286,134.39/8,681.68
  6. Step 6: Final answer
    x = 7,865.54

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Double scale
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Similar ratio
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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.