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Finding the Fourth Proportional to 7,920.70, 10,930.83 and 4,384.24

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Solution

The fourth proportional to 7,920.70, 10,930.83 and 4,384.24 is: 6,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.70 : 10,930.83 = 4,384.24 : x
  2. Step 2: Convert to fraction form
    7,920.70/10,930.83 = 4,384.24/x
  3. Step 3: Cross multiply
    7,920.70x = 10,930.83 × 4,384.24
  4. Step 4: Simplify right side
    7,920.70x = 47,923,382.12
  5. Step 5: Solve for x
    x = 47,923,382.12/7,920.70
  6. Step 6: Final answer
    x = 6,050.40

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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.