Home / 2,298.80-3,172.20-1,415.18

Finding the Fourth Proportional to 2,298.80, 3,172.20 and 1,415.18

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Solution

The fourth proportional to 2,298.80, 3,172.20 and 1,415.18 is: 1,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,298.80 : 3,172.20 = 1,415.18 : x
  2. Step 2: Convert to fraction form
    2,298.80/3,172.20 = 1,415.18/x
  3. Step 3: Cross multiply
    2,298.80x = 3,172.20 × 1,415.18
  4. Step 4: Simplify right side
    2,298.80x = 4,489,234.00
  5. Step 5: Solve for x
    x = 4,489,234.00/2,298.80
  6. Step 6: Final answer
    x = 1,952.86

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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.