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Finding the Fourth Proportional to 3,390.65, 4,679.59 and 2,064.10

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Solution

The fourth proportional to 3,390.65, 4,679.59 and 2,064.10 is: 2,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.65 : 4,679.59 = 2,064.10 : x
  2. Step 2: Convert to fraction form
    3,390.65/4,679.59 = 2,064.10/x
  3. Step 3: Cross multiply
    3,390.65x = 4,679.59 × 2,064.10
  4. Step 4: Simplify right side
    3,390.65x = 9,659,161.60
  5. Step 5: Solve for x
    x = 9,659,161.60/3,390.65
  6. Step 6: Final answer
    x = 2,848.77

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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.