Home / 7,209.20-9,948.64-4,065.36

Finding the Fourth Proportional to 7,209.20, 9,948.64 and 4,065.36

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Solution

The fourth proportional to 7,209.20, 9,948.64 and 4,065.36 is: 5,610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.20 : 9,948.64 = 4,065.36 : x
  2. Step 2: Convert to fraction form
    7,209.20/9,948.64 = 4,065.36/x
  3. Step 3: Cross multiply
    7,209.20x = 9,948.64 × 4,065.36
  4. Step 4: Simplify right side
    7,209.20x = 40,444,803.11
  5. Step 5: Solve for x
    x = 40,444,803.11/7,209.20
  6. Step 6: Final answer
    x = 5,610.17

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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.