Home / 1,308.48-1,962.78-1,245.43

Finding the Fourth Proportional to 1,308.48, 1,962.78 and 1,245.43

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Solution

The fourth proportional to 1,308.48, 1,962.78 and 1,245.43 is: 1,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.48 : 1,962.78 = 1,245.43 : x
  2. Step 2: Convert to fraction form
    1,308.48/1,962.78 = 1,245.43/x
  3. Step 3: Cross multiply
    1,308.48x = 1,962.78 × 1,245.43
  4. Step 4: Simplify right side
    1,308.48x = 2,444,505.10
  5. Step 5: Solve for x
    x = 2,444,505.10/1,308.48
  6. Step 6: Final answer
    x = 1,868.20

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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.