Home / 2,149.31-3,223.60-1,316.08

Finding the Fourth Proportional to 2,149.31, 3,223.60 and 1,316.08

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Solution

The fourth proportional to 2,149.31, 3,223.60 and 1,316.08 is: 1,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.31 : 3,223.60 = 1,316.08 : x
  2. Step 2: Convert to fraction form
    2,149.31/3,223.60 = 1,316.08/x
  3. Step 3: Cross multiply
    2,149.31x = 3,223.60 × 1,316.08
  4. Step 4: Simplify right side
    2,149.31x = 4,242,521.16
  5. Step 5: Solve for x
    x = 4,242,521.16/2,149.31
  6. Step 6: Final answer
    x = 1,973.90

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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.