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Finding the Fourth Proportional to 8,959.55, 13,441.55 and 3,116.21

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Solution

The fourth proportional to 8,959.55, 13,441.55 and 3,116.21 is: 4,675.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.55 : 13,441.55 = 3,116.21 : x
  2. Step 2: Convert to fraction form
    8,959.55/13,441.55 = 3,116.21/x
  3. Step 3: Cross multiply
    8,959.55x = 13,441.55 × 3,116.21
  4. Step 4: Simplify right side
    8,959.55x = 41,886,609.74
  5. Step 5: Solve for x
    x = 41,886,609.74/8,959.55
  6. Step 6: Final answer
    x = 4,675.08

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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.