Home / 7,439.19-11,159.71-3,280.25

Finding the Fourth Proportional to 7,439.19, 11,159.71 and 3,280.25

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Solution

The fourth proportional to 7,439.19, 11,159.71 and 3,280.25 is: 4,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.19 : 11,159.71 = 3,280.25 : x
  2. Step 2: Convert to fraction form
    7,439.19/11,159.71 = 3,280.25/x
  3. Step 3: Cross multiply
    7,439.19x = 11,159.71 × 3,280.25
  4. Step 4: Simplify right side
    7,439.19x = 36,606,616.58
  5. Step 5: Solve for x
    x = 36,606,616.58/7,439.19
  6. Step 6: Final answer
    x = 4,920.78

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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.