Home / 1,778.15-2,665.07-1,258.31

Finding the Fourth Proportional to 1,778.15, 2,665.07 and 1,258.31

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Solution

The fourth proportional to 1,778.15, 2,665.07 and 1,258.31 is: 1,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.15 : 2,665.07 = 1,258.31 : x
  2. Step 2: Convert to fraction form
    1,778.15/2,665.07 = 1,258.31/x
  3. Step 3: Cross multiply
    1,778.15x = 2,665.07 × 1,258.31
  4. Step 4: Simplify right side
    1,778.15x = 3,353,470.58
  5. Step 5: Solve for x
    x = 3,353,470.58/1,778.15
  6. Step 6: Final answer
    x = 1,885.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.