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Finding the Fourth Proportional to 7,036.84, 9,710.28 and 3,892.80

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Solution

The fourth proportional to 7,036.84, 9,710.28 and 3,892.80 is: 5,371.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,036.84 : 9,710.28 = 3,892.80 : x
  2. Step 2: Convert to fraction form
    7,036.84/9,710.28 = 3,892.80/x
  3. Step 3: Cross multiply
    7,036.84x = 9,710.28 × 3,892.80
  4. Step 4: Simplify right side
    7,036.84x = 37,800,177.98
  5. Step 5: Solve for x
    x = 37,800,177.98/7,036.84
  6. Step 6: Final answer
    x = 5,371.75

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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.