Home / 3,487.47-4,813.55-2,160.38

Finding the Fourth Proportional to 3,487.47, 4,813.55 and 2,160.38

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Solution

The fourth proportional to 3,487.47, 4,813.55 and 2,160.38 is: 2,981.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.47 : 4,813.55 = 2,160.38 : x
  2. Step 2: Convert to fraction form
    3,487.47/4,813.55 = 2,160.38/x
  3. Step 3: Cross multiply
    3,487.47x = 4,813.55 × 2,160.38
  4. Step 4: Simplify right side
    3,487.47x = 10,399,078.48
  5. Step 5: Solve for x
    x = 10,399,078.48/3,487.47
  6. Step 6: Final answer
    x = 2,981.84

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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.