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Finding the Fourth Proportional to 7,799.84, 10,765.68 and 5,151.68

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Solution

The fourth proportional to 7,799.84, 10,765.68 and 5,151.68 is: 7,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,799.84 : 10,765.68 = 5,151.68 : x
  2. Step 2: Convert to fraction form
    7,799.84/10,765.68 = 5,151.68/x
  3. Step 3: Cross multiply
    7,799.84x = 10,765.68 × 5,151.68
  4. Step 4: Simplify right side
    7,799.84x = 55,461,338.34
  5. Step 5: Solve for x
    x = 55,461,338.34/7,799.84
  6. Step 6: Final answer
    x = 7,110.57

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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.