Home / 7,210.80-10,815.66-2,280.60

Finding the Fourth Proportional to 7,210.80, 10,815.66 and 2,280.60

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Solution

The fourth proportional to 7,210.80, 10,815.66 and 2,280.60 is: 3,420.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.80 : 10,815.66 = 2,280.60 : x
  2. Step 2: Convert to fraction form
    7,210.80/10,815.66 = 2,280.60/x
  3. Step 3: Cross multiply
    7,210.80x = 10,815.66 × 2,280.60
  4. Step 4: Simplify right side
    7,210.80x = 24,666,194.20
  5. Step 5: Solve for x
    x = 24,666,194.20/7,210.80
  6. Step 6: Final answer
    x = 3,420.73

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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.