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Finding the Fourth Proportional to 7,768.58, 10,694.36 and 7,020.18

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Solution

The fourth proportional to 7,768.58, 10,694.36 and 7,020.18 is: 9,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.58 : 10,694.36 = 7,020.18 : x
  2. Step 2: Convert to fraction form
    7,768.58/10,694.36 = 7,020.18/x
  3. Step 3: Cross multiply
    7,768.58x = 10,694.36 × 7,020.18
  4. Step 4: Simplify right side
    7,768.58x = 75,076,349.74
  5. Step 5: Solve for x
    x = 75,076,349.74/7,768.58
  6. Step 6: Final answer
    x = 9,664.11

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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.