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Finding the Fourth Proportional to 7,219.71, 9,962.79 and 4,235.33

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Solution

The fourth proportional to 7,219.71, 9,962.79 and 4,235.33 is: 5,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.71 : 9,962.79 = 4,235.33 : x
  2. Step 2: Convert to fraction form
    7,219.71/9,962.79 = 4,235.33/x
  3. Step 3: Cross multiply
    7,219.71x = 9,962.79 × 4,235.33
  4. Step 4: Simplify right side
    7,219.71x = 42,195,653.56
  5. Step 5: Solve for x
    x = 42,195,653.56/7,219.71
  6. Step 6: Final answer
    x = 5,844.51

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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.