Home / 1,455.12-2,008.95-1,081.65

Finding the Fourth Proportional to 1,455.12, 2,008.95 and 1,081.65

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Solution

The fourth proportional to 1,455.12, 2,008.95 and 1,081.65 is: 1,493.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.12 : 2,008.95 = 1,081.65 : x
  2. Step 2: Convert to fraction form
    1,455.12/2,008.95 = 1,081.65/x
  3. Step 3: Cross multiply
    1,455.12x = 2,008.95 × 1,081.65
  4. Step 4: Simplify right side
    1,455.12x = 2,172,980.77
  5. Step 5: Solve for x
    x = 2,172,980.77/1,455.12
  6. Step 6: Final answer
    x = 1,493.33

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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.