Home / 7,776.20-10,731.36-4,751.81

Finding the Fourth Proportional to 7,776.20, 10,731.36 and 4,751.81

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Solution

The fourth proportional to 7,776.20, 10,731.36 and 4,751.81 is: 6,557.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.20 : 10,731.36 = 4,751.81 : x
  2. Step 2: Convert to fraction form
    7,776.20/10,731.36 = 4,751.81/x
  3. Step 3: Cross multiply
    7,776.20x = 10,731.36 × 4,751.81
  4. Step 4: Simplify right side
    7,776.20x = 50,993,330.10
  5. Step 5: Solve for x
    x = 50,993,330.10/7,776.20
  6. Step 6: Final answer
    x = 6,557.62

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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.