Home / 1,208.48-1,814.88-921.92

Finding the Fourth Proportional to 1,208.48, 1,814.88 and 921.92

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Solution

The fourth proportional to 1,208.48, 1,814.88 and 921.92 is: 1,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.48 : 1,814.88 = 921.92 : x
  2. Step 2: Convert to fraction form
    1,208.48/1,814.88 = 921.92/x
  3. Step 3: Cross multiply
    1,208.48x = 1,814.88 × 921.92
  4. Step 4: Simplify right side
    1,208.48x = 1,673,174.17
  5. Step 5: Solve for x
    x = 1,673,174.17/1,208.48
  6. Step 6: Final answer
    x = 1,384.53

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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.