Home / 2,909.30-4,016.13-1,730.78

Finding the Fourth Proportional to 2,909.30, 4,016.13 and 1,730.78

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Solution

The fourth proportional to 2,909.30, 4,016.13 and 1,730.78 is: 2,389.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.30 : 4,016.13 = 1,730.78 : x
  2. Step 2: Convert to fraction form
    2,909.30/4,016.13 = 1,730.78/x
  3. Step 3: Cross multiply
    2,909.30x = 4,016.13 × 1,730.78
  4. Step 4: Simplify right side
    2,909.30x = 6,951,037.48
  5. Step 5: Solve for x
    x = 6,951,037.48/2,909.30
  6. Step 6: Final answer
    x = 2,389.25

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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.