Home / 2,987.15-4,122.27-1,693.56

Finding the Fourth Proportional to 2,987.15, 4,122.27 and 1,693.56

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Solution

The fourth proportional to 2,987.15, 4,122.27 and 1,693.56 is: 2,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.15 : 4,122.27 = 1,693.56 : x
  2. Step 2: Convert to fraction form
    2,987.15/4,122.27 = 1,693.56/x
  3. Step 3: Cross multiply
    2,987.15x = 4,122.27 × 1,693.56
  4. Step 4: Simplify right side
    2,987.15x = 6,981,299.09
  5. Step 5: Solve for x
    x = 6,981,299.09/2,987.15
  6. Step 6: Final answer
    x = 2,337.11

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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.