Home / 7,390.78-11,076.30-2,706.40

Finding the Fourth Proportional to 7,390.78, 11,076.30 and 2,706.40

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Solution

The fourth proportional to 7,390.78, 11,076.30 and 2,706.40 is: 4,055.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.78 : 11,076.30 = 2,706.40 : x
  2. Step 2: Convert to fraction form
    7,390.78/11,076.30 = 2,706.40/x
  3. Step 3: Cross multiply
    7,390.78x = 11,076.30 × 2,706.40
  4. Step 4: Simplify right side
    7,390.78x = 29,976,898.32
  5. Step 5: Solve for x
    x = 29,976,898.32/7,390.78
  6. Step 6: Final answer
    x = 4,055.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.