Home / 3,031.85-4,180.86-2,136.39

Finding the Fourth Proportional to 3,031.85, 4,180.86 and 2,136.39

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Solution

The fourth proportional to 3,031.85, 4,180.86 and 2,136.39 is: 2,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.85 : 4,180.86 = 2,136.39 : x
  2. Step 2: Convert to fraction form
    3,031.85/4,180.86 = 2,136.39/x
  3. Step 3: Cross multiply
    3,031.85x = 4,180.86 × 2,136.39
  4. Step 4: Simplify right side
    3,031.85x = 8,931,947.50
  5. Step 5: Solve for x
    x = 8,931,947.50/3,031.85
  6. Step 6: Final answer
    x = 2,946.04

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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.