Home / 5,320.72-7,972.28-2,720.08

Finding the Fourth Proportional to 5,320.72, 7,972.28 and 2,720.08

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Solution

The fourth proportional to 5,320.72, 7,972.28 and 2,720.08 is: 4,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.72 : 7,972.28 = 2,720.08 : x
  2. Step 2: Convert to fraction form
    5,320.72/7,972.28 = 2,720.08/x
  3. Step 3: Cross multiply
    5,320.72x = 7,972.28 × 2,720.08
  4. Step 4: Simplify right side
    5,320.72x = 21,685,239.38
  5. Step 5: Solve for x
    x = 21,685,239.38/5,320.72
  6. Step 6: Final answer
    x = 4,075.62

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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.