Home / 1,511.20-2,085.33-922.06

Finding the Fourth Proportional to 1,511.20, 2,085.33 and 922.06

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Solution

The fourth proportional to 1,511.20, 2,085.33 and 922.06 is: 1,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.20 : 2,085.33 = 922.06 : x
  2. Step 2: Convert to fraction form
    1,511.20/2,085.33 = 922.06/x
  3. Step 3: Cross multiply
    1,511.20x = 2,085.33 × 922.06
  4. Step 4: Simplify right side
    1,511.20x = 1,922,799.38
  5. Step 5: Solve for x
    x = 1,922,799.38/1,511.20
  6. Step 6: Final answer
    x = 1,272.37

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1.5x scale

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.