Home / 2,287.65-3,432.45-1,118.70

Finding the Fourth Proportional to 2,287.65, 3,432.45 and 1,118.70

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Solution

The fourth proportional to 2,287.65, 3,432.45 and 1,118.70 is: 1,678.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.65 : 3,432.45 = 1,118.70 : x
  2. Step 2: Convert to fraction form
    2,287.65/3,432.45 = 1,118.70/x
  3. Step 3: Cross multiply
    2,287.65x = 3,432.45 × 1,118.70
  4. Step 4: Simplify right side
    2,287.65x = 3,839,881.82
  5. Step 5: Solve for x
    x = 3,839,881.82/2,287.65
  6. Step 6: Final answer
    x = 1,678.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.