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Finding the Fourth Proportional to 3,037.80, 4,193.72 and 1,919.90

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Solution

The fourth proportional to 3,037.80, 4,193.72 and 1,919.90 is: 2,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,037.80 : 4,193.72 = 1,919.90 : x
  2. Step 2: Convert to fraction form
    3,037.80/4,193.72 = 1,919.90/x
  3. Step 3: Cross multiply
    3,037.80x = 4,193.72 × 1,919.90
  4. Step 4: Simplify right side
    3,037.80x = 8,051,541.91
  5. Step 5: Solve for x
    x = 8,051,541.91/3,037.80
  6. Step 6: Final answer
    x = 2,650.45

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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.