Home / 2,813.28-4,220.24-964.68

Finding the Fourth Proportional to 2,813.28, 4,220.24 and 964.68

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Solution

The fourth proportional to 2,813.28, 4,220.24 and 964.68 is: 1,447.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.28 : 4,220.24 = 964.68 : x
  2. Step 2: Convert to fraction form
    2,813.28/4,220.24 = 964.68/x
  3. Step 3: Cross multiply
    2,813.28x = 4,220.24 × 964.68
  4. Step 4: Simplify right side
    2,813.28x = 4,071,181.12
  5. Step 5: Solve for x
    x = 4,071,181.12/2,813.28
  6. Step 6: Final answer
    x = 1,447.13

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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.