Home / 3,615.18-5,427.09-2,155.02

Finding the Fourth Proportional to 3,615.18, 5,427.09 and 2,155.02

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Solution

The fourth proportional to 3,615.18, 5,427.09 and 2,155.02 is: 3,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.18 : 5,427.09 = 2,155.02 : x
  2. Step 2: Convert to fraction form
    3,615.18/5,427.09 = 2,155.02/x
  3. Step 3: Cross multiply
    3,615.18x = 5,427.09 × 2,155.02
  4. Step 4: Simplify right side
    3,615.18x = 11,695,487.49
  5. Step 5: Solve for x
    x = 11,695,487.49/3,615.18
  6. Step 6: Final answer
    x = 3,235.11

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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.