Home / 2,885.12-3,981.44-1,642.88

Finding the Fourth Proportional to 2,885.12, 3,981.44 and 1,642.88

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Solution

The fourth proportional to 2,885.12, 3,981.44 and 1,642.88 is: 2,267.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.12 : 3,981.44 = 1,642.88 : x
  2. Step 2: Convert to fraction form
    2,885.12/3,981.44 = 1,642.88/x
  3. Step 3: Cross multiply
    2,885.12x = 3,981.44 × 1,642.88
  4. Step 4: Simplify right side
    2,885.12x = 6,541,028.15
  5. Step 5: Solve for x
    x = 6,541,028.15/2,885.12
  6. Step 6: Final answer
    x = 2,267.16

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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.