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Finding the Fourth Proportional to 7,821.52, 10,793.84 and 4,284.51

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Solution

The fourth proportional to 7,821.52, 10,793.84 and 4,284.51 is: 5,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.52 : 10,793.84 = 4,284.51 : x
  2. Step 2: Convert to fraction form
    7,821.52/10,793.84 = 4,284.51/x
  3. Step 3: Cross multiply
    7,821.52x = 10,793.84 × 4,284.51
  4. Step 4: Simplify right side
    7,821.52x = 46,246,315.42
  5. Step 5: Solve for x
    x = 46,246,315.42/7,821.52
  6. Step 6: Final answer
    x = 5,912.70

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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.