Home / 8,758.20-12,086.64-5,221.74

Finding the Fourth Proportional to 8,758.20, 12,086.64 and 5,221.74

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Solution

The fourth proportional to 8,758.20, 12,086.64 and 5,221.74 is: 7,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.20 : 12,086.64 = 5,221.74 : x
  2. Step 2: Convert to fraction form
    8,758.20/12,086.64 = 5,221.74/x
  3. Step 3: Cross multiply
    8,758.20x = 12,086.64 × 5,221.74
  4. Step 4: Simplify right side
    8,758.20x = 63,113,291.55
  5. Step 5: Solve for x
    x = 63,113,291.55/8,758.20
  6. Step 6: Final answer
    x = 7,206.19

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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.