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Finding the Fourth Proportional to 7,830.88, 10,808.64 and 4,844.96

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Solution

The fourth proportional to 7,830.88, 10,808.64 and 4,844.96 is: 6,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.88 : 10,808.64 = 4,844.96 : x
  2. Step 2: Convert to fraction form
    7,830.88/10,808.64 = 4,844.96/x
  3. Step 3: Cross multiply
    7,830.88x = 10,808.64 × 4,844.96
  4. Step 4: Simplify right side
    7,830.88x = 52,367,428.45
  5. Step 5: Solve for x
    x = 52,367,428.45/7,830.88
  6. Step 6: Final answer
    x = 6,687.30

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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.