Home / 7,280.47-10,920.71-3,382.75

Finding the Fourth Proportional to 7,280.47, 10,920.71 and 3,382.75

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Solution

The fourth proportional to 7,280.47, 10,920.71 and 3,382.75 is: 5,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.47 : 10,920.71 = 3,382.75 : x
  2. Step 2: Convert to fraction form
    7,280.47/10,920.71 = 3,382.75/x
  3. Step 3: Cross multiply
    7,280.47x = 10,920.71 × 3,382.75
  4. Step 4: Simplify right side
    7,280.47x = 36,942,031.75
  5. Step 5: Solve for x
    x = 36,942,031.75/7,280.47
  6. Step 6: Final answer
    x = 5,074.13

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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.