Home / 3,479.40-5,215.59-1,531.26

Finding the Fourth Proportional to 3,479.40, 5,215.59 and 1,531.26

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Solution

The fourth proportional to 3,479.40, 5,215.59 and 1,531.26 is: 2,295.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.40 : 5,215.59 = 1,531.26 : x
  2. Step 2: Convert to fraction form
    3,479.40/5,215.59 = 1,531.26/x
  3. Step 3: Cross multiply
    3,479.40x = 5,215.59 × 1,531.26
  4. Step 4: Simplify right side
    3,479.40x = 7,986,424.34
  5. Step 5: Solve for x
    x = 7,986,424.34/3,479.40
  6. Step 6: Final answer
    x = 2,295.35

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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.