Home / 1,953.12-2,695.22-1,113.88

Finding the Fourth Proportional to 1,953.12, 2,695.22 and 1,113.88

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Solution

The fourth proportional to 1,953.12, 2,695.22 and 1,113.88 is: 1,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.12 : 2,695.22 = 1,113.88 : x
  2. Step 2: Convert to fraction form
    1,953.12/2,695.22 = 1,113.88/x
  3. Step 3: Cross multiply
    1,953.12x = 2,695.22 × 1,113.88
  4. Step 4: Simplify right side
    1,953.12x = 3,002,151.65
  5. Step 5: Solve for x
    x = 3,002,151.65/1,953.12
  6. Step 6: Final answer
    x = 1,537.11

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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.