Home / 2,802.02-3,866.31-1,808.61

Finding the Fourth Proportional to 2,802.02, 3,866.31 and 1,808.61

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Solution

The fourth proportional to 2,802.02, 3,866.31 and 1,808.61 is: 2,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.02 : 3,866.31 = 1,808.61 : x
  2. Step 2: Convert to fraction form
    2,802.02/3,866.31 = 1,808.61/x
  3. Step 3: Cross multiply
    2,802.02x = 3,866.31 × 1,808.61
  4. Step 4: Simplify right side
    2,802.02x = 6,992,646.93
  5. Step 5: Solve for x
    x = 6,992,646.93/2,802.02
  6. Step 6: Final answer
    x = 2,495.58

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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.