Home / 3,136.90-4,329.06-1,877.72

Finding the Fourth Proportional to 3,136.90, 4,329.06 and 1,877.72

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Solution

The fourth proportional to 3,136.90, 4,329.06 and 1,877.72 is: 2,591.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.90 : 4,329.06 = 1,877.72 : x
  2. Step 2: Convert to fraction form
    3,136.90/4,329.06 = 1,877.72/x
  3. Step 3: Cross multiply
    3,136.90x = 4,329.06 × 1,877.72
  4. Step 4: Simplify right side
    3,136.90x = 8,128,740.90
  5. Step 5: Solve for x
    x = 8,128,740.90/3,136.90
  6. Step 6: Final answer
    x = 2,591.33

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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.