Home / 1,851.87-2,555.40-1,105.68

Finding the Fourth Proportional to 1,851.87, 2,555.40 and 1,105.68

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Solution

The fourth proportional to 1,851.87, 2,555.40 and 1,105.68 is: 1,525.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.87 : 2,555.40 = 1,105.68 : x
  2. Step 2: Convert to fraction form
    1,851.87/2,555.40 = 1,105.68/x
  3. Step 3: Cross multiply
    1,851.87x = 2,555.40 × 1,105.68
  4. Step 4: Simplify right side
    1,851.87x = 2,825,454.67
  5. Step 5: Solve for x
    x = 2,825,454.67/1,851.87
  6. Step 6: Final answer
    x = 1,525.73

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Double scale
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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.