Home / 1,508.75-2,081.43-1,011.54

Finding the Fourth Proportional to 1,508.75, 2,081.43 and 1,011.54

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Solution

The fourth proportional to 1,508.75, 2,081.43 and 1,011.54 is: 1,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.75 : 2,081.43 = 1,011.54 : x
  2. Step 2: Convert to fraction form
    1,508.75/2,081.43 = 1,011.54/x
  3. Step 3: Cross multiply
    1,508.75x = 2,081.43 × 1,011.54
  4. Step 4: Simplify right side
    1,508.75x = 2,105,449.70
  5. Step 5: Solve for x
    x = 2,105,449.70/1,508.75
  6. Step 6: Final answer
    x = 1,395.50

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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.