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Finding the Fourth Proportional to 7,800.02, 10,757.90 and 6,904.70

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Solution

The fourth proportional to 7,800.02, 10,757.90 and 6,904.70 is: 9,523.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.02 : 10,757.90 = 6,904.70 : x
  2. Step 2: Convert to fraction form
    7,800.02/10,757.90 = 6,904.70/x
  3. Step 3: Cross multiply
    7,800.02x = 10,757.90 × 6,904.70
  4. Step 4: Simplify right side
    7,800.02x = 74,279,983.82
  5. Step 5: Solve for x
    x = 74,279,983.82/7,800.02
  6. Step 6: Final answer
    x = 9,523.06

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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.