Home / 1,508.28-2,081.40-845.13

Finding the Fourth Proportional to 1,508.28, 2,081.40 and 845.13

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Solution

The fourth proportional to 1,508.28, 2,081.40 and 845.13 is: 1,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.28 : 2,081.40 = 845.13 : x
  2. Step 2: Convert to fraction form
    1,508.28/2,081.40 = 845.13/x
  3. Step 3: Cross multiply
    1,508.28x = 2,081.40 × 845.13
  4. Step 4: Simplify right side
    1,508.28x = 1,759,060.90
  5. Step 5: Solve for x
    x = 1,759,060.90/1,508.28
  6. Step 6: Final answer
    x = 1,166.27

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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.