Home / 2,862.20-4,291.40-1,218.30

Finding the Fourth Proportional to 2,862.20, 4,291.40 and 1,218.30

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Solution

The fourth proportional to 2,862.20, 4,291.40 and 1,218.30 is: 1,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.20 : 4,291.40 = 1,218.30 : x
  2. Step 2: Convert to fraction form
    2,862.20/4,291.40 = 1,218.30/x
  3. Step 3: Cross multiply
    2,862.20x = 4,291.40 × 1,218.30
  4. Step 4: Simplify right side
    2,862.20x = 5,228,212.62
  5. Step 5: Solve for x
    x = 5,228,212.62/2,862.20
  6. Step 6: Final answer
    x = 1,826.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.