Home / 8,486.40-11,716.08-5,657.76

Finding the Fourth Proportional to 8,486.40, 11,716.08 and 5,657.76

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Solution

The fourth proportional to 8,486.40, 11,716.08 and 5,657.76 is: 7,810.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.40 : 11,716.08 = 5,657.76 : x
  2. Step 2: Convert to fraction form
    8,486.40/11,716.08 = 5,657.76/x
  3. Step 3: Cross multiply
    8,486.40x = 11,716.08 × 5,657.76
  4. Step 4: Simplify right side
    8,486.40x = 66,286,768.78
  5. Step 5: Solve for x
    x = 66,286,768.78/8,486.40
  6. Step 6: Final answer
    x = 7,810.94

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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.