Home / 3,970.50-5,474.31-2,551.70

Finding the Fourth Proportional to 3,970.50, 5,474.31 and 2,551.70

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Solution

The fourth proportional to 3,970.50, 5,474.31 and 2,551.70 is: 3,518.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.50 : 5,474.31 = 2,551.70 : x
  2. Step 2: Convert to fraction form
    3,970.50/5,474.31 = 2,551.70/x
  3. Step 3: Cross multiply
    3,970.50x = 5,474.31 × 2,551.70
  4. Step 4: Simplify right side
    3,970.50x = 13,968,769.46
  5. Step 5: Solve for x
    x = 13,968,769.46/3,970.50
  6. Step 6: Final answer
    x = 3,518.14

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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.