Home / 5,415.44-8,120.40-2,642.24

Finding the Fourth Proportional to 5,415.44, 8,120.40 and 2,642.24

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Solution

The fourth proportional to 5,415.44, 8,120.40 and 2,642.24 is: 3,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.44 : 8,120.40 = 2,642.24 : x
  2. Step 2: Convert to fraction form
    5,415.44/8,120.40 = 2,642.24/x
  3. Step 3: Cross multiply
    5,415.44x = 8,120.40 × 2,642.24
  4. Step 4: Simplify right side
    5,415.44x = 21,456,045.70
  5. Step 5: Solve for x
    x = 21,456,045.70/5,415.44
  6. Step 6: Final answer
    x = 3,962.01

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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.