Home / 6,909.18-10,363.75-1,978.82

Finding the Fourth Proportional to 6,909.18, 10,363.75 and 1,978.82

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Solution

The fourth proportional to 6,909.18, 10,363.75 and 1,978.82 is: 2,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.18 : 10,363.75 = 1,978.82 : x
  2. Step 2: Convert to fraction form
    6,909.18/10,363.75 = 1,978.82/x
  3. Step 3: Cross multiply
    6,909.18x = 10,363.75 × 1,978.82
  4. Step 4: Simplify right side
    6,909.18x = 20,508,009.36
  5. Step 5: Solve for x
    x = 20,508,009.36/6,909.18
  6. Step 6: Final answer
    x = 2,968.22

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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.