Home / 2,747.28-4,118.64-1,285.68

Finding the Fourth Proportional to 2,747.28, 4,118.64 and 1,285.68

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Solution

The fourth proportional to 2,747.28, 4,118.64 and 1,285.68 is: 1,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.28 : 4,118.64 = 1,285.68 : x
  2. Step 2: Convert to fraction form
    2,747.28/4,118.64 = 1,285.68/x
  3. Step 3: Cross multiply
    2,747.28x = 4,118.64 × 1,285.68
  4. Step 4: Simplify right side
    2,747.28x = 5,295,253.08
  5. Step 5: Solve for x
    x = 5,295,253.08/2,747.28
  6. Step 6: Final answer
    x = 1,927.45

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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.