Home / 2,802.33-3,866.40-1,807.20

Finding the Fourth Proportional to 2,802.33, 3,866.40 and 1,807.20

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Solution

The fourth proportional to 2,802.33, 3,866.40 and 1,807.20 is: 2,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.33 : 3,866.40 = 1,807.20 : x
  2. Step 2: Convert to fraction form
    2,802.33/3,866.40 = 1,807.20/x
  3. Step 3: Cross multiply
    2,802.33x = 3,866.40 × 1,807.20
  4. Step 4: Simplify right side
    2,802.33x = 6,987,358.08
  5. Step 5: Solve for x
    x = 6,987,358.08/2,802.33
  6. Step 6: Final answer
    x = 2,493.41

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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.