Home / 2,909.96-4,015.12-1,730.80

Finding the Fourth Proportional to 2,909.96, 4,015.12 and 1,730.80

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Solution

The fourth proportional to 2,909.96, 4,015.12 and 1,730.80 is: 2,388.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.96 : 4,015.12 = 1,730.80 : x
  2. Step 2: Convert to fraction form
    2,909.96/4,015.12 = 1,730.80/x
  3. Step 3: Cross multiply
    2,909.96x = 4,015.12 × 1,730.80
  4. Step 4: Simplify right side
    2,909.96x = 6,949,340.97
  5. Step 5: Solve for x
    x = 6,949,340.97/2,909.96
  6. Step 6: Final answer
    x = 2,388.13

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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.