Home / 1,392.41-2,089.61-1,028.18

Finding the Fourth Proportional to 1,392.41, 2,089.61 and 1,028.18

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Solution

The fourth proportional to 1,392.41, 2,089.61 and 1,028.18 is: 1,543.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.41 : 2,089.61 = 1,028.18 : x
  2. Step 2: Convert to fraction form
    1,392.41/2,089.61 = 1,028.18/x
  3. Step 3: Cross multiply
    1,392.41x = 2,089.61 × 1,028.18
  4. Step 4: Simplify right side
    1,392.41x = 2,148,479.62
  5. Step 5: Solve for x
    x = 2,148,479.62/1,392.41
  6. Step 6: Final answer
    x = 1,543.00

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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.