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Finding the Fourth Proportional to 3,487.62, 4,811.31 and 2,070.51

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Solution

The fourth proportional to 3,487.62, 4,811.31 and 2,070.51 is: 2,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.62 : 4,811.31 = 2,070.51 : x
  2. Step 2: Convert to fraction form
    3,487.62/4,811.31 = 2,070.51/x
  3. Step 3: Cross multiply
    3,487.62x = 4,811.31 × 2,070.51
  4. Step 4: Simplify right side
    3,487.62x = 9,961,865.47
  5. Step 5: Solve for x
    x = 9,961,865.47/3,487.62
  6. Step 6: Final answer
    x = 2,856.35

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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.