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Finding the Fourth Proportional to 7,804.88, 10,777.96 and 5,015.28

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Solution

The fourth proportional to 7,804.88, 10,777.96 and 5,015.28 is: 6,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,804.88 : 10,777.96 = 5,015.28 : x
  2. Step 2: Convert to fraction form
    7,804.88/10,777.96 = 5,015.28/x
  3. Step 3: Cross multiply
    7,804.88x = 10,777.96 × 5,015.28
  4. Step 4: Simplify right side
    7,804.88x = 54,054,487.23
  5. Step 5: Solve for x
    x = 54,054,487.23/7,804.88
  6. Step 6: Final answer
    x = 6,925.73

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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.