Home / 7,579.80-11,340-4,987.80

Finding the Fourth Proportional to 7,579.80, 11,340 and 4,987.80

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Solution

The fourth proportional to 7,579.80, 11,340 and 4,987.80 is: 7,462.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.80 : 11,340 = 4,987.80 : x
  2. Step 2: Convert to fraction form
    7,579.80/11,340 = 4,987.80/x
  3. Step 3: Cross multiply
    7,579.80x = 11,340 × 4,987.80
  4. Step 4: Simplify right side
    7,579.80x = 56,561,652
  5. Step 5: Solve for x
    x = 56,561,652/7,579.80
  6. Step 6: Final answer
    x = 7,462.16

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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.