Home / 5,349.24-7,381.80-2,991.60

Finding the Fourth Proportional to 5,349.24, 7,381.80 and 2,991.60

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Solution

The fourth proportional to 5,349.24, 7,381.80 and 2,991.60 is: 4,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,349.24 : 7,381.80 = 2,991.60 : x
  2. Step 2: Convert to fraction form
    5,349.24/7,381.80 = 2,991.60/x
  3. Step 3: Cross multiply
    5,349.24x = 7,381.80 × 2,991.60
  4. Step 4: Simplify right side
    5,349.24x = 22,083,392.88
  5. Step 5: Solve for x
    x = 22,083,392.88/5,349.24
  6. Step 6: Final answer
    x = 4,128.32

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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.