Home / 5,415.02-8,118.48-3,655.09

Finding the Fourth Proportional to 5,415.02, 8,118.48 and 3,655.09

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Solution

The fourth proportional to 5,415.02, 8,118.48 and 3,655.09 is: 5,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.02 : 8,118.48 = 3,655.09 : x
  2. Step 2: Convert to fraction form
    5,415.02/8,118.48 = 3,655.09/x
  3. Step 3: Cross multiply
    5,415.02x = 8,118.48 × 3,655.09
  4. Step 4: Simplify right side
    5,415.02x = 29,673,775.06
  5. Step 5: Solve for x
    x = 29,673,775.06/5,415.02
  6. Step 6: Final answer
    x = 5,479.90

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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.