Home / 1,117.26-1,541.82-619.92

Finding the Fourth Proportional to 1,117.26, 1,541.82 and 619.92

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Solution

The fourth proportional to 1,117.26, 1,541.82 and 619.92 is: 855.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.26 : 1,541.82 = 619.92 : x
  2. Step 2: Convert to fraction form
    1,117.26/1,541.82 = 619.92/x
  3. Step 3: Cross multiply
    1,117.26x = 1,541.82 × 619.92
  4. Step 4: Simplify right side
    1,117.26x = 955,805.05
  5. Step 5: Solve for x
    x = 955,805.05/1,117.26
  6. Step 6: Final answer
    x = 855.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.