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Finding the Fourth Proportional to 2,362.90, 3,260.85 and 1,368.50

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Solution

The fourth proportional to 2,362.90, 3,260.85 and 1,368.50 is: 1,888.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,362.90 : 3,260.85 = 1,368.50 : x
  2. Step 2: Convert to fraction form
    2,362.90/3,260.85 = 1,368.50/x
  3. Step 3: Cross multiply
    2,362.90x = 3,260.85 × 1,368.50
  4. Step 4: Simplify right side
    2,362.90x = 4,462,473.23
  5. Step 5: Solve for x
    x = 4,462,473.23/2,362.90
  6. Step 6: Final answer
    x = 1,888.56

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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.