Home / 1,268.02-1,746.33-1,240.79

Finding the Fourth Proportional to 1,268.02, 1,746.33 and 1,240.79

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Solution

The fourth proportional to 1,268.02, 1,746.33 and 1,240.79 is: 1,708.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.02 : 1,746.33 = 1,240.79 : x
  2. Step 2: Convert to fraction form
    1,268.02/1,746.33 = 1,240.79/x
  3. Step 3: Cross multiply
    1,268.02x = 1,746.33 × 1,240.79
  4. Step 4: Simplify right side
    1,268.02x = 2,166,815.42
  5. Step 5: Solve for x
    x = 2,166,815.42/1,268.02
  6. Step 6: Final answer
    x = 1,708.82

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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.