Home / 3,218.69-4,436.49-2,156.07

Finding the Fourth Proportional to 3,218.69, 4,436.49 and 2,156.07

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Solution

The fourth proportional to 3,218.69, 4,436.49 and 2,156.07 is: 2,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.69 : 4,436.49 = 2,156.07 : x
  2. Step 2: Convert to fraction form
    3,218.69/4,436.49 = 2,156.07/x
  3. Step 3: Cross multiply
    3,218.69x = 4,436.49 × 2,156.07
  4. Step 4: Simplify right side
    3,218.69x = 9,565,382.99
  5. Step 5: Solve for x
    x = 9,565,382.99/3,218.69
  6. Step 6: Final answer
    x = 2,971.82

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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.