Home / 3,840.40-5,296.92-2,845.72

Finding the Fourth Proportional to 3,840.40, 5,296.92 and 2,845.72

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Solution

The fourth proportional to 3,840.40, 5,296.92 and 2,845.72 is: 3,925.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.40 : 5,296.92 = 2,845.72 : x
  2. Step 2: Convert to fraction form
    3,840.40/5,296.92 = 2,845.72/x
  3. Step 3: Cross multiply
    3,840.40x = 5,296.92 × 2,845.72
  4. Step 4: Simplify right side
    3,840.40x = 15,073,551.18
  5. Step 5: Solve for x
    x = 15,073,551.18/3,840.40
  6. Step 6: Final answer
    x = 3,925.00

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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.