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Finding the Fourth Proportional to 6,387.93, 9,578.79 and 2,228.19

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Solution

The fourth proportional to 6,387.93, 9,578.79 and 2,228.19 is: 3,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.93 : 9,578.79 = 2,228.19 : x
  2. Step 2: Convert to fraction form
    6,387.93/9,578.79 = 2,228.19/x
  3. Step 3: Cross multiply
    6,387.93x = 9,578.79 × 2,228.19
  4. Step 4: Simplify right side
    6,387.93x = 21,343,364.09
  5. Step 5: Solve for x
    x = 21,343,364.09/6,387.93
  6. Step 6: Final answer
    x = 3,341.20

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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.