Home / 5,238.36-7,858.02-2,639.64

Finding the Fourth Proportional to 5,238.36, 7,858.02 and 2,639.64

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Solution

The fourth proportional to 5,238.36, 7,858.02 and 2,639.64 is: 3,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.36 : 7,858.02 = 2,639.64 : x
  2. Step 2: Convert to fraction form
    5,238.36/7,858.02 = 2,639.64/x
  3. Step 3: Cross multiply
    5,238.36x = 7,858.02 × 2,639.64
  4. Step 4: Simplify right side
    5,238.36x = 20,742,343.91
  5. Step 5: Solve for x
    x = 20,742,343.91/5,238.36
  6. Step 6: Final answer
    x = 3,959.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.