Home / 7,111.24-10,666.86-1,917.52

Finding the Fourth Proportional to 7,111.24, 10,666.86 and 1,917.52

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Solution

The fourth proportional to 7,111.24, 10,666.86 and 1,917.52 is: 2,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.24 : 10,666.86 = 1,917.52 : x
  2. Step 2: Convert to fraction form
    7,111.24/10,666.86 = 1,917.52/x
  3. Step 3: Cross multiply
    7,111.24x = 10,666.86 × 1,917.52
  4. Step 4: Simplify right side
    7,111.24x = 20,453,917.39
  5. Step 5: Solve for x
    x = 20,453,917.39/7,111.24
  6. Step 6: Final answer
    x = 2,876.28

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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.