Home / 2,287.11-3,155.72-1,342.65

Finding the Fourth Proportional to 2,287.11, 3,155.72 and 1,342.65

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Solution

The fourth proportional to 2,287.11, 3,155.72 and 1,342.65 is: 1,852.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.11 : 3,155.72 = 1,342.65 : x
  2. Step 2: Convert to fraction form
    2,287.11/3,155.72 = 1,342.65/x
  3. Step 3: Cross multiply
    2,287.11x = 3,155.72 × 1,342.65
  4. Step 4: Simplify right side
    2,287.11x = 4,237,020.74
  5. Step 5: Solve for x
    x = 4,237,020.74/2,287.11
  6. Step 6: Final answer
    x = 1,852.57

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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.