Home / 3,197.13-4,411.99-1,780.78

Finding the Fourth Proportional to 3,197.13, 4,411.99 and 1,780.78

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Solution

The fourth proportional to 3,197.13, 4,411.99 and 1,780.78 is: 2,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,197.13 : 4,411.99 = 1,780.78 : x
  2. Step 2: Convert to fraction form
    3,197.13/4,411.99 = 1,780.78/x
  3. Step 3: Cross multiply
    3,197.13x = 4,411.99 × 1,780.78
  4. Step 4: Simplify right side
    3,197.13x = 7,856,783.55
  5. Step 5: Solve for x
    x = 7,856,783.55/3,197.13
  6. Step 6: Final answer
    x = 2,457.45

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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.