Home / 2,149.14-2,965.80-1,217.64

Finding the Fourth Proportional to 2,149.14, 2,965.80 and 1,217.64

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Solution

The fourth proportional to 2,149.14, 2,965.80 and 1,217.64 is: 1,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.14 : 2,965.80 = 1,217.64 : x
  2. Step 2: Convert to fraction form
    2,149.14/2,965.80 = 1,217.64/x
  3. Step 3: Cross multiply
    2,149.14x = 2,965.80 × 1,217.64
  4. Step 4: Simplify right side
    2,149.14x = 3,611,276.71
  5. Step 5: Solve for x
    x = 3,611,276.71/2,149.14
  6. Step 6: Final answer
    x = 1,680.34

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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.