Home / 6,619.14-9,931.20-4,151.20

Finding the Fourth Proportional to 6,619.14, 9,931.20 and 4,151.20

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Solution

The fourth proportional to 6,619.14, 9,931.20 and 4,151.20 is: 6,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.14 : 9,931.20 = 4,151.20 : x
  2. Step 2: Convert to fraction form
    6,619.14/9,931.20 = 4,151.20/x
  3. Step 3: Cross multiply
    6,619.14x = 9,931.20 × 4,151.20
  4. Step 4: Simplify right side
    6,619.14x = 41,226,397.44
  5. Step 5: Solve for x
    x = 41,226,397.44/6,619.14
  6. Step 6: Final answer
    x = 6,228.36

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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.