Home / 3,074.16-4,242.12-1,815.15

Finding the Fourth Proportional to 3,074.16, 4,242.12 and 1,815.15

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Solution

The fourth proportional to 3,074.16, 4,242.12 and 1,815.15 is: 2,504.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.16 : 4,242.12 = 1,815.15 : x
  2. Step 2: Convert to fraction form
    3,074.16/4,242.12 = 1,815.15/x
  3. Step 3: Cross multiply
    3,074.16x = 4,242.12 × 1,815.15
  4. Step 4: Simplify right side
    3,074.16x = 7,700,084.12
  5. Step 5: Solve for x
    x = 7,700,084.12/3,074.16
  6. Step 6: Final answer
    x = 2,504.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.