Home / 3,126.05-4,302.98-2,830.80

Finding the Fourth Proportional to 3,126.05, 4,302.98 and 2,830.80

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Solution

The fourth proportional to 3,126.05, 4,302.98 and 2,830.80 is: 3,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.05 : 4,302.98 = 2,830.80 : x
  2. Step 2: Convert to fraction form
    3,126.05/4,302.98 = 2,830.80/x
  3. Step 3: Cross multiply
    3,126.05x = 4,302.98 × 2,830.80
  4. Step 4: Simplify right side
    3,126.05x = 12,180,875.78
  5. Step 5: Solve for x
    x = 12,180,875.78/3,126.05
  6. Step 6: Final answer
    x = 3,896.57

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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.