Home / 7,817.61-11,720.75-3,655.29

Finding the Fourth Proportional to 7,817.61, 11,720.75 and 3,655.29

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Solution

The fourth proportional to 7,817.61, 11,720.75 and 3,655.29 is: 5,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.61 : 11,720.75 = 3,655.29 : x
  2. Step 2: Convert to fraction form
    7,817.61/11,720.75 = 3,655.29/x
  3. Step 3: Cross multiply
    7,817.61x = 11,720.75 × 3,655.29
  4. Step 4: Simplify right side
    7,817.61x = 42,842,721.99
  5. Step 5: Solve for x
    x = 42,842,721.99/7,817.61
  6. Step 6: Final answer
    x = 5,480.28

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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.