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Finding the Fourth Proportional to 7,774.32, 10,728.68 and 4,788.46

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Solution

The fourth proportional to 7,774.32, 10,728.68 and 4,788.46 is: 6,608.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,774.32 : 10,728.68 = 4,788.46 : x
  2. Step 2: Convert to fraction form
    7,774.32/10,728.68 = 4,788.46/x
  3. Step 3: Cross multiply
    7,774.32x = 10,728.68 × 4,788.46
  4. Step 4: Simplify right side
    7,774.32x = 51,373,804.27
  5. Step 5: Solve for x
    x = 51,373,804.27/7,774.32
  6. Step 6: Final answer
    x = 6,608.14

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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.