Home / 7,320.40-10,973.40-3,623.20

Finding the Fourth Proportional to 7,320.40, 10,973.40 and 3,623.20

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Solution

The fourth proportional to 7,320.40, 10,973.40 and 3,623.20 is: 5,431.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.40 : 10,973.40 = 3,623.20 : x
  2. Step 2: Convert to fraction form
    7,320.40/10,973.40 = 3,623.20/x
  3. Step 3: Cross multiply
    7,320.40x = 10,973.40 × 3,623.20
  4. Step 4: Simplify right side
    7,320.40x = 39,758,822.88
  5. Step 5: Solve for x
    x = 39,758,822.88/7,320.40
  6. Step 6: Final answer
    x = 5,431.24

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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.