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Finding the Fourth Proportional to 7,021.49, 9,636.17 and 6,356.88

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Solution

The fourth proportional to 7,021.49, 9,636.17 and 6,356.88 is: 8,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.49 : 9,636.17 = 6,356.88 : x
  2. Step 2: Convert to fraction form
    7,021.49/9,636.17 = 6,356.88/x
  3. Step 3: Cross multiply
    7,021.49x = 9,636.17 × 6,356.88
  4. Step 4: Simplify right side
    7,021.49x = 61,255,944.57
  5. Step 5: Solve for x
    x = 61,255,944.57/7,021.49
  6. Step 6: Final answer
    x = 8,724.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.