Home / 2,225.12-3,069.65-1,439.42

Finding the Fourth Proportional to 2,225.12, 3,069.65 and 1,439.42

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Solution

The fourth proportional to 2,225.12, 3,069.65 and 1,439.42 is: 1,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.12 : 3,069.65 = 1,439.42 : x
  2. Step 2: Convert to fraction form
    2,225.12/3,069.65 = 1,439.42/x
  3. Step 3: Cross multiply
    2,225.12x = 3,069.65 × 1,439.42
  4. Step 4: Simplify right side
    2,225.12x = 4,418,508.41
  5. Step 5: Solve for x
    x = 4,418,508.41/2,225.12
  6. Step 6: Final answer
    x = 1,985.74

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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.