Home / 7,218-9,961.31-4,233.51

Finding the Fourth Proportional to 7,218, 9,961.31 and 4,233.51

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Solution

The fourth proportional to 7,218, 9,961.31 and 4,233.51 is: 5,842.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218 : 9,961.31 = 4,233.51 : x
  2. Step 2: Convert to fraction form
    7,218/9,961.31 = 4,233.51/x
  3. Step 3: Cross multiply
    7,218x = 9,961.31 × 4,233.51
  4. Step 4: Simplify right side
    7,218x = 42,171,284.33
  5. Step 5: Solve for x
    x = 42,171,284.33/7,218
  6. Step 6: Final answer
    x = 5,842.52

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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.