Home / 7,280.60-10,919.09-3,120.13

Finding the Fourth Proportional to 7,280.60, 10,919.09 and 3,120.13

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Solution

The fourth proportional to 7,280.60, 10,919.09 and 3,120.13 is: 4,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.60 : 10,919.09 = 3,120.13 : x
  2. Step 2: Convert to fraction form
    7,280.60/10,919.09 = 3,120.13/x
  3. Step 3: Cross multiply
    7,280.60x = 10,919.09 × 3,120.13
  4. Step 4: Simplify right side
    7,280.60x = 34,069,012.70
  5. Step 5: Solve for x
    x = 34,069,012.70/7,280.60
  6. Step 6: Final answer
    x = 4,679.43

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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.