Home / 1,308.16-1,961.70-528.13

Finding the Fourth Proportional to 1,308.16, 1,961.70 and 528.13

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Solution

The fourth proportional to 1,308.16, 1,961.70 and 528.13 is: 791.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.16 : 1,961.70 = 528.13 : x
  2. Step 2: Convert to fraction form
    1,308.16/1,961.70 = 528.13/x
  3. Step 3: Cross multiply
    1,308.16x = 1,961.70 × 528.13
  4. Step 4: Simplify right side
    1,308.16x = 1,036,032.62
  5. Step 5: Solve for x
    x = 1,036,032.62/1,308.16
  6. Step 6: Final answer
    x = 791.98

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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.