Home / 7,282.10-10,920.83-3,121.00

Finding the Fourth Proportional to 7,282.10, 10,920.83 and 3,121.00

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Solution

The fourth proportional to 7,282.10, 10,920.83 and 3,121.00 is: 4,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,282.10 : 10,920.83 = 3,121.00 : x
  2. Step 2: Convert to fraction form
    7,282.10/10,920.83 = 3,121.00/x
  3. Step 3: Cross multiply
    7,282.10x = 10,920.83 × 3,121.00
  4. Step 4: Simplify right side
    7,282.10x = 34,083,867.52
  5. Step 5: Solve for x
    x = 34,083,867.52/7,282.10
  6. Step 6: Final answer
    x = 4,680.50

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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.