Home / 3,115.12-4,666.20-2,281.60

Finding the Fourth Proportional to 3,115.12, 4,666.20 and 2,281.60

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Solution

The fourth proportional to 3,115.12, 4,666.20 and 2,281.60 is: 3,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.12 : 4,666.20 = 2,281.60 : x
  2. Step 2: Convert to fraction form
    3,115.12/4,666.20 = 2,281.60/x
  3. Step 3: Cross multiply
    3,115.12x = 4,666.20 × 2,281.60
  4. Step 4: Simplify right side
    3,115.12x = 10,646,401.92
  5. Step 5: Solve for x
    x = 10,646,401.92/3,115.12
  6. Step 6: Final answer
    x = 3,417.65

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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.