Home / 7,104.78-10,656.36-1,911.06

Finding the Fourth Proportional to 7,104.78, 10,656.36 and 1,911.06

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Solution

The fourth proportional to 7,104.78, 10,656.36 and 1,911.06 is: 2,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.78 : 10,656.36 = 1,911.06 : x
  2. Step 2: Convert to fraction form
    7,104.78/10,656.36 = 1,911.06/x
  3. Step 3: Cross multiply
    7,104.78x = 10,656.36 × 1,911.06
  4. Step 4: Simplify right side
    7,104.78x = 20,364,943.34
  5. Step 5: Solve for x
    x = 20,364,943.34/7,104.78
  6. Step 6: Final answer
    x = 2,866.37

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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.