Home / 1,869.31-2,580.10-1,083.81

Finding the Fourth Proportional to 1,869.31, 2,580.10 and 1,083.81

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Solution

The fourth proportional to 1,869.31, 2,580.10 and 1,083.81 is: 1,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.31 : 2,580.10 = 1,083.81 : x
  2. Step 2: Convert to fraction form
    1,869.31/2,580.10 = 1,083.81/x
  3. Step 3: Cross multiply
    1,869.31x = 2,580.10 × 1,083.81
  4. Step 4: Simplify right side
    1,869.31x = 2,796,319.86
  5. Step 5: Solve for x
    x = 2,796,319.86/1,869.31
  6. Step 6: Final answer
    x = 1,495.91

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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.