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Finding the Fourth Proportional to 7,750.80, 10,696.10 and 4,393.84

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Solution

The fourth proportional to 7,750.80, 10,696.10 and 4,393.84 is: 6,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.80 : 10,696.10 = 4,393.84 : x
  2. Step 2: Convert to fraction form
    7,750.80/10,696.10 = 4,393.84/x
  3. Step 3: Cross multiply
    7,750.80x = 10,696.10 × 4,393.84
  4. Step 4: Simplify right side
    7,750.80x = 46,996,952.02
  5. Step 5: Solve for x
    x = 46,996,952.02/7,750.80
  6. Step 6: Final answer
    x = 6,063.50

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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.