Home / 3,487.12-5,231.88-1,407.58

Finding the Fourth Proportional to 3,487.12, 5,231.88 and 1,407.58

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Solution

The fourth proportional to 3,487.12, 5,231.88 and 1,407.58 is: 2,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.12 : 5,231.88 = 1,407.58 : x
  2. Step 2: Convert to fraction form
    3,487.12/5,231.88 = 1,407.58/x
  3. Step 3: Cross multiply
    3,487.12x = 5,231.88 × 1,407.58
  4. Step 4: Simplify right side
    3,487.12x = 7,364,289.65
  5. Step 5: Solve for x
    x = 7,364,289.65/3,487.12
  6. Step 6: Final answer
    x = 2,111.85

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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.