Home / 3,386.25-5,071.78-2,640.04

Finding the Fourth Proportional to 3,386.25, 5,071.78 and 2,640.04

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Solution

The fourth proportional to 3,386.25, 5,071.78 and 2,640.04 is: 3,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.25 : 5,071.78 = 2,640.04 : x
  2. Step 2: Convert to fraction form
    3,386.25/5,071.78 = 2,640.04/x
  3. Step 3: Cross multiply
    3,386.25x = 5,071.78 × 2,640.04
  4. Step 4: Simplify right side
    3,386.25x = 13,389,702.07
  5. Step 5: Solve for x
    x = 13,389,702.07/3,386.25
  6. Step 6: Final answer
    x = 3,954.14

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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.