Home / 1,887.81-2,828.66-1,155.17

Finding the Fourth Proportional to 1,887.81, 2,828.66 and 1,155.17

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Solution

The fourth proportional to 1,887.81, 2,828.66 and 1,155.17 is: 1,730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.81 : 2,828.66 = 1,155.17 : x
  2. Step 2: Convert to fraction form
    1,887.81/2,828.66 = 1,155.17/x
  3. Step 3: Cross multiply
    1,887.81x = 2,828.66 × 1,155.17
  4. Step 4: Simplify right side
    1,887.81x = 3,267,569.03
  5. Step 5: Solve for x
    x = 3,267,569.03/1,887.81
  6. Step 6: Final answer
    x = 1,730.88

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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.