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Finding the Fourth Proportional to 7,605.76, 10,500.89 and 6,807.70

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Solution

The fourth proportional to 7,605.76, 10,500.89 and 6,807.70 is: 9,399.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.76 : 10,500.89 = 6,807.70 : x
  2. Step 2: Convert to fraction form
    7,605.76/10,500.89 = 6,807.70/x
  3. Step 3: Cross multiply
    7,605.76x = 10,500.89 × 6,807.70
  4. Step 4: Simplify right side
    7,605.76x = 71,486,874.81
  5. Step 5: Solve for x
    x = 71,486,874.81/7,605.76
  6. Step 6: Final answer
    x = 9,399.04

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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.