Home / 1,282.41-1,919.04-1,129.32

Finding the Fourth Proportional to 1,282.41, 1,919.04 and 1,129.32

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Solution

The fourth proportional to 1,282.41, 1,919.04 and 1,129.32 is: 1,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.41 : 1,919.04 = 1,129.32 : x
  2. Step 2: Convert to fraction form
    1,282.41/1,919.04 = 1,129.32/x
  3. Step 3: Cross multiply
    1,282.41x = 1,919.04 × 1,129.32
  4. Step 4: Simplify right side
    1,282.41x = 2,167,210.25
  5. Step 5: Solve for x
    x = 2,167,210.25/1,282.41
  6. Step 6: Final answer
    x = 1,689.95

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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.