Home / 3,915.19-5,405.30-2,590.03

Finding the Fourth Proportional to 3,915.19, 5,405.30 and 2,590.03

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Solution

The fourth proportional to 3,915.19, 5,405.30 and 2,590.03 is: 3,575.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.19 : 5,405.30 = 2,590.03 : x
  2. Step 2: Convert to fraction form
    3,915.19/5,405.30 = 2,590.03/x
  3. Step 3: Cross multiply
    3,915.19x = 5,405.30 × 2,590.03
  4. Step 4: Simplify right side
    3,915.19x = 13,999,889.16
  5. Step 5: Solve for x
    x = 13,999,889.16/3,915.19
  6. Step 6: Final answer
    x = 3,575.79

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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.