Home / 3,227.31-4,840.85-918.81

Finding the Fourth Proportional to 3,227.31, 4,840.85 and 918.81

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Solution

The fourth proportional to 3,227.31, 4,840.85 and 918.81 is: 1,378.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,227.31 : 4,840.85 = 918.81 : x
  2. Step 2: Convert to fraction form
    3,227.31/4,840.85 = 918.81/x
  3. Step 3: Cross multiply
    3,227.31x = 4,840.85 × 918.81
  4. Step 4: Simplify right side
    3,227.31x = 4,447,823.69
  5. Step 5: Solve for x
    x = 4,447,823.69/3,227.31
  6. Step 6: Final answer
    x = 1,378.18

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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.