Home / 5,415.81-8,118.97-2,603.24

Finding the Fourth Proportional to 5,415.81, 8,118.97 and 2,603.24

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Solution

The fourth proportional to 5,415.81, 8,118.97 and 2,603.24 is: 3,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.81 : 8,118.97 = 2,603.24 : x
  2. Step 2: Convert to fraction form
    5,415.81/8,118.97 = 2,603.24/x
  3. Step 3: Cross multiply
    5,415.81x = 8,118.97 × 2,603.24
  4. Step 4: Simplify right side
    5,415.81x = 21,135,627.46
  5. Step 5: Solve for x
    x = 21,135,627.46/5,415.81
  6. Step 6: Final answer
    x = 3,902.58

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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.