Home / 5,118.30-7,661.55-2,772.48

Finding the Fourth Proportional to 5,118.30, 7,661.55 and 2,772.48

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Solution

The fourth proportional to 5,118.30, 7,661.55 and 2,772.48 is: 4,150.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.30 : 7,661.55 = 2,772.48 : x
  2. Step 2: Convert to fraction form
    5,118.30/7,661.55 = 2,772.48/x
  3. Step 3: Cross multiply
    5,118.30x = 7,661.55 × 2,772.48
  4. Step 4: Simplify right side
    5,118.30x = 21,241,475.81
  5. Step 5: Solve for x
    x = 21,241,475.81/5,118.30
  6. Step 6: Final answer
    x = 4,150.11

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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.