Home / 7,767.85-10,719.92-4,231.32

Finding the Fourth Proportional to 7,767.85, 10,719.92 and 4,231.32

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Solution

The fourth proportional to 7,767.85, 10,719.92 and 4,231.32 is: 5,839.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.85 : 10,719.92 = 4,231.32 : x
  2. Step 2: Convert to fraction form
    7,767.85/10,719.92 = 4,231.32/x
  3. Step 3: Cross multiply
    7,767.85x = 10,719.92 × 4,231.32
  4. Step 4: Simplify right side
    7,767.85x = 45,359,411.89
  5. Step 5: Solve for x
    x = 45,359,411.89/7,767.85
  6. Step 6: Final answer
    x = 5,839.38

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Half scale
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Double scale
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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.