Home / 2,382.71-3,285.99-1,985.69

Finding the Fourth Proportional to 2,382.71, 3,285.99 and 1,985.69

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Solution

The fourth proportional to 2,382.71, 3,285.99 and 1,985.69 is: 2,738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.71 : 3,285.99 = 1,985.69 : x
  2. Step 2: Convert to fraction form
    2,382.71/3,285.99 = 1,985.69/x
  3. Step 3: Cross multiply
    2,382.71x = 3,285.99 × 1,985.69
  4. Step 4: Simplify right side
    2,382.71x = 6,524,957.48
  5. Step 5: Solve for x
    x = 6,524,957.48/2,382.71
  6. Step 6: Final answer
    x = 2,738.46

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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.