Home / 3,720.80-5,573.76-1,767.20

Finding the Fourth Proportional to 3,720.80, 5,573.76 and 1,767.20

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Solution

The fourth proportional to 3,720.80, 5,573.76 and 1,767.20 is: 2,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.80 : 5,573.76 = 1,767.20 : x
  2. Step 2: Convert to fraction form
    3,720.80/5,573.76 = 1,767.20/x
  3. Step 3: Cross multiply
    3,720.80x = 5,573.76 × 1,767.20
  4. Step 4: Simplify right side
    3,720.80x = 9,849,948.67
  5. Step 5: Solve for x
    x = 9,849,948.67/3,720.80
  6. Step 6: Final answer
    x = 2,647.27

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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.