Home / 3,955.36-5,938.80-2,807.20

Finding the Fourth Proportional to 3,955.36, 5,938.80 and 2,807.20

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Solution

The fourth proportional to 3,955.36, 5,938.80 and 2,807.20 is: 4,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.36 : 5,938.80 = 2,807.20 : x
  2. Step 2: Convert to fraction form
    3,955.36/5,938.80 = 2,807.20/x
  3. Step 3: Cross multiply
    3,955.36x = 5,938.80 × 2,807.20
  4. Step 4: Simplify right side
    3,955.36x = 16,671,399.36
  5. Step 5: Solve for x
    x = 16,671,399.36/3,955.36
  6. Step 6: Final answer
    x = 4,214.89

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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.