Home / 7,420.47-11,131.73-2,739.89

Finding the Fourth Proportional to 7,420.47, 11,131.73 and 2,739.89

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Solution

The fourth proportional to 7,420.47, 11,131.73 and 2,739.89 is: 4,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.47 : 11,131.73 = 2,739.89 : x
  2. Step 2: Convert to fraction form
    7,420.47/11,131.73 = 2,739.89/x
  3. Step 3: Cross multiply
    7,420.47x = 11,131.73 × 2,739.89
  4. Step 4: Simplify right side
    7,420.47x = 30,499,646.35
  5. Step 5: Solve for x
    x = 30,499,646.35/7,420.47
  6. Step 6: Final answer
    x = 4,110.20

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1.5x scale

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.