Home / 1,861.20-2,568.12-1,197.92

Finding the Fourth Proportional to 1,861.20, 2,568.12 and 1,197.92

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Solution

The fourth proportional to 1,861.20, 2,568.12 and 1,197.92 is: 1,652.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.20 : 2,568.12 = 1,197.92 : x
  2. Step 2: Convert to fraction form
    1,861.20/2,568.12 = 1,197.92/x
  3. Step 3: Cross multiply
    1,861.20x = 2,568.12 × 1,197.92
  4. Step 4: Simplify right side
    1,861.20x = 3,076,402.31
  5. Step 5: Solve for x
    x = 3,076,402.31/1,861.20
  6. Step 6: Final answer
    x = 1,652.91

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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.