Home / 2,685.36-4,019.85-2,160.48

Finding the Fourth Proportional to 2,685.36, 4,019.85 and 2,160.48

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Solution

The fourth proportional to 2,685.36, 4,019.85 and 2,160.48 is: 3,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.36 : 4,019.85 = 2,160.48 : x
  2. Step 2: Convert to fraction form
    2,685.36/4,019.85 = 2,160.48/x
  3. Step 3: Cross multiply
    2,685.36x = 4,019.85 × 2,160.48
  4. Step 4: Simplify right side
    2,685.36x = 8,684,805.53
  5. Step 5: Solve for x
    x = 8,684,805.53/2,685.36
  6. Step 6: Final answer
    x = 3,234.13

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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.