Home / 1,308.57-1,954.34-1,172.49

Finding the Fourth Proportional to 1,308.57, 1,954.34 and 1,172.49

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Solution

The fourth proportional to 1,308.57, 1,954.34 and 1,172.49 is: 1,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.57 : 1,954.34 = 1,172.49 : x
  2. Step 2: Convert to fraction form
    1,308.57/1,954.34 = 1,172.49/x
  3. Step 3: Cross multiply
    1,308.57x = 1,954.34 × 1,172.49
  4. Step 4: Simplify right side
    1,308.57x = 2,291,438.24
  5. Step 5: Solve for x
    x = 2,291,438.24/1,308.57
  6. Step 6: Final answer
    x = 1,751.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.