Home / 2,972.55-4,104.12-2,656.80

Finding the Fourth Proportional to 2,972.55, 4,104.12 and 2,656.80

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Solution

The fourth proportional to 2,972.55, 4,104.12 and 2,656.80 is: 3,668.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.55 : 4,104.12 = 2,656.80 : x
  2. Step 2: Convert to fraction form
    2,972.55/4,104.12 = 2,656.80/x
  3. Step 3: Cross multiply
    2,972.55x = 4,104.12 × 2,656.80
  4. Step 4: Simplify right side
    2,972.55x = 10,903,843.67
  5. Step 5: Solve for x
    x = 10,903,843.67/2,972.55
  6. Step 6: Final answer
    x = 3,668.18

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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.