Home / 7,116.08-9,820.13-3,929.37

Finding the Fourth Proportional to 7,116.08, 9,820.13 and 3,929.37

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Solution

The fourth proportional to 7,116.08, 9,820.13 and 3,929.37 is: 5,422.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.08 : 9,820.13 = 3,929.37 : x
  2. Step 2: Convert to fraction form
    7,116.08/9,820.13 = 3,929.37/x
  3. Step 3: Cross multiply
    7,116.08x = 9,820.13 × 3,929.37
  4. Step 4: Simplify right side
    7,116.08x = 38,586,924.22
  5. Step 5: Solve for x
    x = 38,586,924.22/7,116.08
  6. Step 6: Final answer
    x = 5,422.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.