Home / 3,142.77-4,335.78-1,816.23

Finding the Fourth Proportional to 3,142.77, 4,335.78 and 1,816.23

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Solution

The fourth proportional to 3,142.77, 4,335.78 and 1,816.23 is: 2,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.77 : 4,335.78 = 1,816.23 : x
  2. Step 2: Convert to fraction form
    3,142.77/4,335.78 = 1,816.23/x
  3. Step 3: Cross multiply
    3,142.77x = 4,335.78 × 1,816.23
  4. Step 4: Simplify right side
    3,142.77x = 7,874,773.71
  5. Step 5: Solve for x
    x = 7,874,773.71/3,142.77
  6. Step 6: Final answer
    x = 2,505.68

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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.