Home / 2,977.70-4,109.20-1,651.39

Finding the Fourth Proportional to 2,977.70, 4,109.20 and 1,651.39

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Solution

The fourth proportional to 2,977.70, 4,109.20 and 1,651.39 is: 2,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.70 : 4,109.20 = 1,651.39 : x
  2. Step 2: Convert to fraction form
    2,977.70/4,109.20 = 1,651.39/x
  3. Step 3: Cross multiply
    2,977.70x = 4,109.20 × 1,651.39
  4. Step 4: Simplify right side
    2,977.70x = 6,785,877.39
  5. Step 5: Solve for x
    x = 6,785,877.39/2,977.70
  6. Step 6: Final answer
    x = 2,278.90

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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.