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Finding the Fourth Proportional to 3,396.65, 4,687.61 and 2,070

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Solution

The fourth proportional to 3,396.65, 4,687.61 and 2,070 is: 2,856.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.65 : 4,687.61 = 2,070 : x
  2. Step 2: Convert to fraction form
    3,396.65/4,687.61 = 2,070/x
  3. Step 3: Cross multiply
    3,396.65x = 4,687.61 × 2,070
  4. Step 4: Simplify right side
    3,396.65x = 9,703,342.35
  5. Step 5: Solve for x
    x = 9,703,342.35/3,396.65
  6. Step 6: Final answer
    x = 2,856.74

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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.