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Finding the Fourth Proportional to 4,268.40, 6,386.40 and 2,810.40

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Solution

The fourth proportional to 4,268.40, 6,386.40 and 2,810.40 is: 4,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,268.40 : 6,386.40 = 2,810.40 : x
  2. Step 2: Convert to fraction form
    4,268.40/6,386.40 = 2,810.40/x
  3. Step 3: Cross multiply
    4,268.40x = 6,386.40 × 2,810.40
  4. Step 4: Simplify right side
    4,268.40x = 17,948,338.56
  5. Step 5: Solve for x
    x = 17,948,338.56/4,268.40
  6. Step 6: Final answer
    x = 4,204.93

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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.