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Finding the Fourth Proportional to 7,954.76, 10,977.69 and 4,320.81

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Solution

The fourth proportional to 7,954.76, 10,977.69 and 4,320.81 is: 5,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.76 : 10,977.69 = 4,320.81 : x
  2. Step 2: Convert to fraction form
    7,954.76/10,977.69 = 4,320.81/x
  3. Step 3: Cross multiply
    7,954.76x = 10,977.69 × 4,320.81
  4. Step 4: Simplify right side
    7,954.76x = 47,432,512.73
  5. Step 5: Solve for x
    x = 47,432,512.73/7,954.76
  6. Step 6: Final answer
    x = 5,962.79

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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.