Home / 6,786-9,364.68-6,397.20

Finding the Fourth Proportional to 6,786, 9,364.68 and 6,397.20

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Solution

The fourth proportional to 6,786, 9,364.68 and 6,397.20 is: 8,828.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786 : 9,364.68 = 6,397.20 : x
  2. Step 2: Convert to fraction form
    6,786/9,364.68 = 6,397.20/x
  3. Step 3: Cross multiply
    6,786x = 9,364.68 × 6,397.20
  4. Step 4: Simplify right side
    6,786x = 59,907,730.90
  5. Step 5: Solve for x
    x = 59,907,730.90/6,786
  6. Step 6: Final answer
    x = 8,828.14

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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.