Home / 3,136.71-4,326.89-2,017.78

Finding the Fourth Proportional to 3,136.71, 4,326.89 and 2,017.78

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Solution

The fourth proportional to 3,136.71, 4,326.89 and 2,017.78 is: 2,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.71 : 4,326.89 = 2,017.78 : x
  2. Step 2: Convert to fraction form
    3,136.71/4,326.89 = 2,017.78/x
  3. Step 3: Cross multiply
    3,136.71x = 4,326.89 × 2,017.78
  4. Step 4: Simplify right side
    3,136.71x = 8,730,712.10
  5. Step 5: Solve for x
    x = 8,730,712.10/3,136.71
  6. Step 6: Final answer
    x = 2,783.40

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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.