Home / 2,854.20-4,281.30-2,205.40

Finding the Fourth Proportional to 2,854.20, 4,281.30 and 2,205.40

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Solution

The fourth proportional to 2,854.20, 4,281.30 and 2,205.40 is: 3,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.20 : 4,281.30 = 2,205.40 : x
  2. Step 2: Convert to fraction form
    2,854.20/4,281.30 = 2,205.40/x
  3. Step 3: Cross multiply
    2,854.20x = 4,281.30 × 2,205.40
  4. Step 4: Simplify right side
    2,854.20x = 9,441,979.02
  5. Step 5: Solve for x
    x = 9,441,979.02/2,854.20
  6. Step 6: Final answer
    x = 3,308.10

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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.