Home / 6,299.20-9,448.40-2,139.20

Finding the Fourth Proportional to 6,299.20, 9,448.40 and 2,139.20

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Solution

The fourth proportional to 6,299.20, 9,448.40 and 2,139.20 is: 3,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,299.20 : 9,448.40 = 2,139.20 : x
  2. Step 2: Convert to fraction form
    6,299.20/9,448.40 = 2,139.20/x
  3. Step 3: Cross multiply
    6,299.20x = 9,448.40 × 2,139.20
  4. Step 4: Simplify right side
    6,299.20x = 20,212,017.28
  5. Step 5: Solve for x
    x = 20,212,017.28/6,299.20
  6. Step 6: Final answer
    x = 3,208.66

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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.