Home / 2,074.40-2,862.20-1,189.74

Finding the Fourth Proportional to 2,074.40, 2,862.20 and 1,189.74

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Solution

The fourth proportional to 2,074.40, 2,862.20 and 1,189.74 is: 1,641.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.40 : 2,862.20 = 1,189.74 : x
  2. Step 2: Convert to fraction form
    2,074.40/2,862.20 = 1,189.74/x
  3. Step 3: Cross multiply
    2,074.40x = 2,862.20 × 1,189.74
  4. Step 4: Simplify right side
    2,074.40x = 3,405,273.83
  5. Step 5: Solve for x
    x = 3,405,273.83/2,074.40
  6. Step 6: Final answer
    x = 1,641.57

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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.