Home / 7,817.29-10,780.28-6,622.17

Finding the Fourth Proportional to 7,817.29, 10,780.28 and 6,622.17

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Solution

The fourth proportional to 7,817.29, 10,780.28 and 6,622.17 is: 9,132.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.29 : 10,780.28 = 6,622.17 : x
  2. Step 2: Convert to fraction form
    7,817.29/10,780.28 = 6,622.17/x
  3. Step 3: Cross multiply
    7,817.29x = 10,780.28 × 6,622.17
  4. Step 4: Simplify right side
    7,817.29x = 71,388,792.91
  5. Step 5: Solve for x
    x = 71,388,792.91/7,817.29
  6. Step 6: Final answer
    x = 9,132.17

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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.