Home / 5,238.20-7,857.30-2,646.20

Finding the Fourth Proportional to 5,238.20, 7,857.30 and 2,646.20

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Solution

The fourth proportional to 5,238.20, 7,857.30 and 2,646.20 is: 3,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.20 : 7,857.30 = 2,646.20 : x
  2. Step 2: Convert to fraction form
    5,238.20/7,857.30 = 2,646.20/x
  3. Step 3: Cross multiply
    5,238.20x = 7,857.30 × 2,646.20
  4. Step 4: Simplify right side
    5,238.20x = 20,791,987.26
  5. Step 5: Solve for x
    x = 20,791,987.26/5,238.20
  6. Step 6: Final answer
    x = 3,969.30

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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.