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Finding the Fourth Proportional to 2,625.03, 3,938.16 and 869.97

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Solution

The fourth proportional to 2,625.03, 3,938.16 and 869.97 is: 1,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.03 : 3,938.16 = 869.97 : x
  2. Step 2: Convert to fraction form
    2,625.03/3,938.16 = 869.97/x
  3. Step 3: Cross multiply
    2,625.03x = 3,938.16 × 869.97
  4. Step 4: Simplify right side
    2,625.03x = 3,426,081.06
  5. Step 5: Solve for x
    x = 3,426,081.06/2,625.03
  6. Step 6: Final answer
    x = 1,305.16

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1.5x scale

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.