Home / 2,102.10-2,900.65-1,217.73

Finding the Fourth Proportional to 2,102.10, 2,900.65 and 1,217.73

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Solution

The fourth proportional to 2,102.10, 2,900.65 and 1,217.73 is: 1,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.10 : 2,900.65 = 1,217.73 : x
  2. Step 2: Convert to fraction form
    2,102.10/2,900.65 = 1,217.73/x
  3. Step 3: Cross multiply
    2,102.10x = 2,900.65 × 1,217.73
  4. Step 4: Simplify right side
    2,102.10x = 3,532,208.52
  5. Step 5: Solve for x
    x = 3,532,208.52/2,102.10
  6. Step 6: Final answer
    x = 1,680.32

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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.