Home / 2,580.36-3,870.30-731.44

Finding the Fourth Proportional to 2,580.36, 3,870.30 and 731.44

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Solution

The fourth proportional to 2,580.36, 3,870.30 and 731.44 is: 1,097.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.36 : 3,870.30 = 731.44 : x
  2. Step 2: Convert to fraction form
    2,580.36/3,870.30 = 731.44/x
  3. Step 3: Cross multiply
    2,580.36x = 3,870.30 × 731.44
  4. Step 4: Simplify right side
    2,580.36x = 2,830,892.23
  5. Step 5: Solve for x
    x = 2,830,892.23/2,580.36
  6. Step 6: Final answer
    x = 1,097.09

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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.