Home / 8,856.44-12,221.69-5,712.63

Finding the Fourth Proportional to 8,856.44, 12,221.69 and 5,712.63

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Solution

The fourth proportional to 8,856.44, 12,221.69 and 5,712.63 is: 7,883.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.44 : 12,221.69 = 5,712.63 : x
  2. Step 2: Convert to fraction form
    8,856.44/12,221.69 = 5,712.63/x
  3. Step 3: Cross multiply
    8,856.44x = 12,221.69 × 5,712.63
  4. Step 4: Simplify right side
    8,856.44x = 69,817,918.55
  5. Step 5: Solve for x
    x = 69,817,918.55/8,856.44
  6. Step 6: Final answer
    x = 7,883.29

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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.