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Finding the Fourth Proportional to 2,686.65, 3,699.12 and 2,440.62

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Solution

The fourth proportional to 2,686.65, 3,699.12 and 2,440.62 is: 3,360.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.65 : 3,699.12 = 2,440.62 : x
  2. Step 2: Convert to fraction form
    2,686.65/3,699.12 = 2,440.62/x
  3. Step 3: Cross multiply
    2,686.65x = 3,699.12 × 2,440.62
  4. Step 4: Simplify right side
    2,686.65x = 9,028,146.25
  5. Step 5: Solve for x
    x = 9,028,146.25/2,686.65
  6. Step 6: Final answer
    x = 3,360.37

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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.