Home / 3,840.02-5,299.14-2,138.51

Finding the Fourth Proportional to 3,840.02, 5,299.14 and 2,138.51

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Solution

The fourth proportional to 3,840.02, 5,299.14 and 2,138.51 is: 2,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.02 : 5,299.14 = 2,138.51 : x
  2. Step 2: Convert to fraction form
    3,840.02/5,299.14 = 2,138.51/x
  3. Step 3: Cross multiply
    3,840.02x = 5,299.14 × 2,138.51
  4. Step 4: Simplify right side
    3,840.02x = 11,332,263.88
  5. Step 5: Solve for x
    x = 11,332,263.88/3,840.02
  6. Step 6: Final answer
    x = 2,951.10

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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.