Home / 2,760.54-4,140.78-1,298.89

Finding the Fourth Proportional to 2,760.54, 4,140.78 and 1,298.89

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Solution

The fourth proportional to 2,760.54, 4,140.78 and 1,298.89 is: 1,948.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.54 : 4,140.78 = 1,298.89 : x
  2. Step 2: Convert to fraction form
    2,760.54/4,140.78 = 1,298.89/x
  3. Step 3: Cross multiply
    2,760.54x = 4,140.78 × 1,298.89
  4. Step 4: Simplify right side
    2,760.54x = 5,378,417.73
  5. Step 5: Solve for x
    x = 5,378,417.73/2,760.54
  6. Step 6: Final answer
    x = 1,948.32

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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.