Home / 5,405.16-8,104.08-2,116.20

Finding the Fourth Proportional to 5,405.16, 8,104.08 and 2,116.20

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Solution

The fourth proportional to 5,405.16, 8,104.08 and 2,116.20 is: 3,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.16 : 8,104.08 = 2,116.20 : x
  2. Step 2: Convert to fraction form
    5,405.16/8,104.08 = 2,116.20/x
  3. Step 3: Cross multiply
    5,405.16x = 8,104.08 × 2,116.20
  4. Step 4: Simplify right side
    5,405.16x = 17,149,854.10
  5. Step 5: Solve for x
    x = 17,149,854.10/5,405.16
  6. Step 6: Final answer
    x = 3,172.87

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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.