Home / 7,776.76-11,665.14-3,156.52

Finding the Fourth Proportional to 7,776.76, 11,665.14 and 3,156.52

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Solution

The fourth proportional to 7,776.76, 11,665.14 and 3,156.52 is: 4,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.76 : 11,665.14 = 3,156.52 : x
  2. Step 2: Convert to fraction form
    7,776.76/11,665.14 = 3,156.52/x
  3. Step 3: Cross multiply
    7,776.76x = 11,665.14 × 3,156.52
  4. Step 4: Simplify right side
    7,776.76x = 36,821,247.71
  5. Step 5: Solve for x
    x = 36,821,247.71/7,776.76
  6. Step 6: Final answer
    x = 4,734.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.