Home / 7,412.31-11,117.64-1,865.66

Finding the Fourth Proportional to 7,412.31, 11,117.64 and 1,865.66

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Solution

The fourth proportional to 7,412.31, 11,117.64 and 1,865.66 is: 2,798.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.31 : 11,117.64 = 1,865.66 : x
  2. Step 2: Convert to fraction form
    7,412.31/11,117.64 = 1,865.66/x
  3. Step 3: Cross multiply
    7,412.31x = 11,117.64 × 1,865.66
  4. Step 4: Simplify right side
    7,412.31x = 20,741,713.11
  5. Step 5: Solve for x
    x = 20,741,713.11/7,412.31
  6. Step 6: Final answer
    x = 2,798.28

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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.