Home / 2,982.40-4,111.68-2,515.84

Finding the Fourth Proportional to 2,982.40, 4,111.68 and 2,515.84

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Solution

The fourth proportional to 2,982.40, 4,111.68 and 2,515.84 is: 3,468.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.40 : 4,111.68 = 2,515.84 : x
  2. Step 2: Convert to fraction form
    2,982.40/4,111.68 = 2,515.84/x
  3. Step 3: Cross multiply
    2,982.40x = 4,111.68 × 2,515.84
  4. Step 4: Simplify right side
    2,982.40x = 10,344,329.01
  5. Step 5: Solve for x
    x = 10,344,329.01/2,982.40
  6. Step 6: Final answer
    x = 3,468.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.