Home / 5,509.80-7,603.46-2,991.90

Finding the Fourth Proportional to 5,509.80, 7,603.46 and 2,991.90

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Solution

The fourth proportional to 5,509.80, 7,603.46 and 2,991.90 is: 4,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.80 : 7,603.46 = 2,991.90 : x
  2. Step 2: Convert to fraction form
    5,509.80/7,603.46 = 2,991.90/x
  3. Step 3: Cross multiply
    5,509.80x = 7,603.46 × 2,991.90
  4. Step 4: Simplify right side
    5,509.80x = 22,748,777.01
  5. Step 5: Solve for x
    x = 22,748,777.01/5,509.80
  6. Step 6: Final answer
    x = 4,128.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.