Home / 2,712.45-3,740.67-2,121.96

Finding the Fourth Proportional to 2,712.45, 3,740.67 and 2,121.96

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Solution

The fourth proportional to 2,712.45, 3,740.67 and 2,121.96 is: 2,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.45 : 3,740.67 = 2,121.96 : x
  2. Step 2: Convert to fraction form
    2,712.45/3,740.67 = 2,121.96/x
  3. Step 3: Cross multiply
    2,712.45x = 3,740.67 × 2,121.96
  4. Step 4: Simplify right side
    2,712.45x = 7,937,552.11
  5. Step 5: Solve for x
    x = 7,937,552.11/2,712.45
  6. Step 6: Final answer
    x = 2,926.34

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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.