Home / 2,799.64-3,861.40-1,853.76

Finding the Fourth Proportional to 2,799.64, 3,861.40 and 1,853.76

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Solution

The fourth proportional to 2,799.64, 3,861.40 and 1,853.76 is: 2,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.64 : 3,861.40 = 1,853.76 : x
  2. Step 2: Convert to fraction form
    2,799.64/3,861.40 = 1,853.76/x
  3. Step 3: Cross multiply
    2,799.64x = 3,861.40 × 1,853.76
  4. Step 4: Simplify right side
    2,799.64x = 7,158,108.86
  5. Step 5: Solve for x
    x = 7,158,108.86/2,799.64
  6. Step 6: Final answer
    x = 2,556.80

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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.