Home / 8,215.22-12,317.44-2,947.59

Finding the Fourth Proportional to 8,215.22, 12,317.44 and 2,947.59

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Solution

The fourth proportional to 8,215.22, 12,317.44 and 2,947.59 is: 4,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.22 : 12,317.44 = 2,947.59 : x
  2. Step 2: Convert to fraction form
    8,215.22/12,317.44 = 2,947.59/x
  3. Step 3: Cross multiply
    8,215.22x = 12,317.44 × 2,947.59
  4. Step 4: Simplify right side
    8,215.22x = 36,306,769.42
  5. Step 5: Solve for x
    x = 36,306,769.42/8,215.22
  6. Step 6: Final answer
    x = 4,419.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.