Home / 1,858.46-2,565.02-1,268.78

Finding the Fourth Proportional to 1,858.46, 2,565.02 and 1,268.78

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Solution

The fourth proportional to 1,858.46, 2,565.02 and 1,268.78 is: 1,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.46 : 2,565.02 = 1,268.78 : x
  2. Step 2: Convert to fraction form
    1,858.46/2,565.02 = 1,268.78/x
  3. Step 3: Cross multiply
    1,858.46x = 2,565.02 × 1,268.78
  4. Step 4: Simplify right side
    1,858.46x = 3,254,439.73
  5. Step 5: Solve for x
    x = 3,254,439.73/1,858.46
  6. Step 6: Final answer
    x = 1,751.15

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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.