Home / 2,909.20-4,014.38-1,730.12

Finding the Fourth Proportional to 2,909.20, 4,014.38 and 1,730.12

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Solution

The fourth proportional to 2,909.20, 4,014.38 and 1,730.12 is: 2,387.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.20 : 4,014.38 = 1,730.12 : x
  2. Step 2: Convert to fraction form
    2,909.20/4,014.38 = 1,730.12/x
  3. Step 3: Cross multiply
    2,909.20x = 4,014.38 × 1,730.12
  4. Step 4: Simplify right side
    2,909.20x = 6,945,359.13
  5. Step 5: Solve for x
    x = 6,945,359.13/2,909.20
  6. Step 6: Final answer
    x = 2,387.38

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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.