Home / 2,815.24-3,881.86-2,290.28

Finding the Fourth Proportional to 2,815.24, 3,881.86 and 2,290.28

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Solution

The fourth proportional to 2,815.24, 3,881.86 and 2,290.28 is: 3,158.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.24 : 3,881.86 = 2,290.28 : x
  2. Step 2: Convert to fraction form
    2,815.24/3,881.86 = 2,290.28/x
  3. Step 3: Cross multiply
    2,815.24x = 3,881.86 × 2,290.28
  4. Step 4: Simplify right side
    2,815.24x = 8,890,546.32
  5. Step 5: Solve for x
    x = 8,890,546.32/2,815.24
  6. Step 6: Final answer
    x = 3,158.01

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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.