Home / 3,620.16-5,000.40-3,147.12

Finding the Fourth Proportional to 3,620.16, 5,000.40 and 3,147.12

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Solution

The fourth proportional to 3,620.16, 5,000.40 and 3,147.12 is: 4,347.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.16 : 5,000.40 = 3,147.12 : x
  2. Step 2: Convert to fraction form
    3,620.16/5,000.40 = 3,147.12/x
  3. Step 3: Cross multiply
    3,620.16x = 5,000.40 × 3,147.12
  4. Step 4: Simplify right side
    3,620.16x = 15,736,858.85
  5. Step 5: Solve for x
    x = 15,736,858.85/3,620.16
  6. Step 6: Final answer
    x = 4,347.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.