Home / 3,988.70-5,505.17-2,641.94

Finding the Fourth Proportional to 3,988.70, 5,505.17 and 2,641.94

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Solution

The fourth proportional to 3,988.70, 5,505.17 and 2,641.94 is: 3,646.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.70 : 5,505.17 = 2,641.94 : x
  2. Step 2: Convert to fraction form
    3,988.70/5,505.17 = 2,641.94/x
  3. Step 3: Cross multiply
    3,988.70x = 5,505.17 × 2,641.94
  4. Step 4: Simplify right side
    3,988.70x = 14,544,328.83
  5. Step 5: Solve for x
    x = 14,544,328.83/3,988.70
  6. Step 6: Final answer
    x = 3,646.38

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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.