Home / 2,083.81-2,875.64-1,139.60

Finding the Fourth Proportional to 2,083.81, 2,875.64 and 1,139.60

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Solution

The fourth proportional to 2,083.81, 2,875.64 and 1,139.60 is: 1,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.81 : 2,875.64 = 1,139.60 : x
  2. Step 2: Convert to fraction form
    2,083.81/2,875.64 = 1,139.60/x
  3. Step 3: Cross multiply
    2,083.81x = 2,875.64 × 1,139.60
  4. Step 4: Simplify right side
    2,083.81x = 3,277,073.65
  5. Step 5: Solve for x
    x = 3,277,073.65/2,083.81
  6. Step 6: Final answer
    x = 1,572.64

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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.