Home / 3,938.63-5,435.37-2,543.81

Finding the Fourth Proportional to 3,938.63, 5,435.37 and 2,543.81

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Solution

The fourth proportional to 3,938.63, 5,435.37 and 2,543.81 is: 3,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.63 : 5,435.37 = 2,543.81 : x
  2. Step 2: Convert to fraction form
    3,938.63/5,435.37 = 2,543.81/x
  3. Step 3: Cross multiply
    3,938.63x = 5,435.37 × 2,543.81
  4. Step 4: Simplify right side
    3,938.63x = 13,826,521.38
  5. Step 5: Solve for x
    x = 13,826,521.38/3,938.63
  6. Step 6: Final answer
    x = 3,510.49

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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.