Home / 2,275.40-3,416.70-1,728.20

Finding the Fourth Proportional to 2,275.40, 3,416.70 and 1,728.20

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Solution

The fourth proportional to 2,275.40, 3,416.70 and 1,728.20 is: 2,595.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.40 : 3,416.70 = 1,728.20 : x
  2. Step 2: Convert to fraction form
    2,275.40/3,416.70 = 1,728.20/x
  3. Step 3: Cross multiply
    2,275.40x = 3,416.70 × 1,728.20
  4. Step 4: Simplify right side
    2,275.40x = 5,904,740.94
  5. Step 5: Solve for x
    x = 5,904,740.94/2,275.40
  6. Step 6: Final answer
    x = 2,595.03

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1.5x scale

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.