Home / 2,840.40-3,918.60-2,052.72

Finding the Fourth Proportional to 2,840.40, 3,918.60 and 2,052.72

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Solution

The fourth proportional to 2,840.40, 3,918.60 and 2,052.72 is: 2,831.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.40 : 3,918.60 = 2,052.72 : x
  2. Step 2: Convert to fraction form
    2,840.40/3,918.60 = 2,052.72/x
  3. Step 3: Cross multiply
    2,840.40x = 3,918.60 × 2,052.72
  4. Step 4: Simplify right side
    2,840.40x = 8,043,788.59
  5. Step 5: Solve for x
    x = 8,043,788.59/2,840.40
  6. Step 6: Final answer
    x = 2,831.92

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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.