Home / 5,349.23-7,380.88-2,990.91

Finding the Fourth Proportional to 5,349.23, 7,380.88 and 2,990.91

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Solution

The fourth proportional to 5,349.23, 7,380.88 and 2,990.91 is: 4,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,349.23 : 7,380.88 = 2,990.91 : x
  2. Step 2: Convert to fraction form
    5,349.23/7,380.88 = 2,990.91/x
  3. Step 3: Cross multiply
    5,349.23x = 7,380.88 × 2,990.91
  4. Step 4: Simplify right side
    5,349.23x = 22,075,540.32
  5. Step 5: Solve for x
    x = 22,075,540.32/5,349.23
  6. Step 6: Final answer
    x = 4,126.87

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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.