Home / 1,825.20-2,518.40-1,079.18

Finding the Fourth Proportional to 1,825.20, 2,518.40 and 1,079.18

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Solution

The fourth proportional to 1,825.20, 2,518.40 and 1,079.18 is: 1,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,825.20 : 2,518.40 = 1,079.18 : x
  2. Step 2: Convert to fraction form
    1,825.20/2,518.40 = 1,079.18/x
  3. Step 3: Cross multiply
    1,825.20x = 2,518.40 × 1,079.18
  4. Step 4: Simplify right side
    1,825.20x = 2,717,806.91
  5. Step 5: Solve for x
    x = 2,717,806.91/1,825.20
  6. Step 6: Final answer
    x = 1,489.05

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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.