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Finding the Fourth Proportional to 2,325.80, 3,488.16 and 865.10

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Solution

The fourth proportional to 2,325.80, 3,488.16 and 865.10 is: 1,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.80 : 3,488.16 = 865.10 : x
  2. Step 2: Convert to fraction form
    2,325.80/3,488.16 = 865.10/x
  3. Step 3: Cross multiply
    2,325.80x = 3,488.16 × 865.10
  4. Step 4: Simplify right side
    2,325.80x = 3,017,607.22
  5. Step 5: Solve for x
    x = 3,017,607.22/2,325.80
  6. Step 6: Final answer
    x = 1,297.45

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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.