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Finding the Fourth Proportional to 3,903.63, 5,387.03 and 2,506.38

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Solution

The fourth proportional to 3,903.63, 5,387.03 and 2,506.38 is: 3,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.63 : 5,387.03 = 2,506.38 : x
  2. Step 2: Convert to fraction form
    3,903.63/5,387.03 = 2,506.38/x
  3. Step 3: Cross multiply
    3,903.63x = 5,387.03 × 2,506.38
  4. Step 4: Simplify right side
    3,903.63x = 13,501,944.25
  5. Step 5: Solve for x
    x = 13,501,944.25/3,903.63
  6. Step 6: Final answer
    x = 3,458.82

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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.