Home / 5,487.75-7,574.45-3,131.26

Finding the Fourth Proportional to 5,487.75, 7,574.45 and 3,131.26

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Solution

The fourth proportional to 5,487.75, 7,574.45 and 3,131.26 is: 4,321.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.75 : 7,574.45 = 3,131.26 : x
  2. Step 2: Convert to fraction form
    5,487.75/7,574.45 = 3,131.26/x
  3. Step 3: Cross multiply
    5,487.75x = 7,574.45 × 3,131.26
  4. Step 4: Simplify right side
    5,487.75x = 23,717,537.71
  5. Step 5: Solve for x
    x = 23,717,537.71/5,487.75
  6. Step 6: Final answer
    x = 4,321.91

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1.5x scale

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.