Home / 1,138.30-1,715.83-1,044.68

Finding the Fourth Proportional to 1,138.30, 1,715.83 and 1,044.68

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Solution

The fourth proportional to 1,138.30, 1,715.83 and 1,044.68 is: 1,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.30 : 1,715.83 = 1,044.68 : x
  2. Step 2: Convert to fraction form
    1,138.30/1,715.83 = 1,044.68/x
  3. Step 3: Cross multiply
    1,138.30x = 1,715.83 × 1,044.68
  4. Step 4: Simplify right side
    1,138.30x = 1,792,482.09
  5. Step 5: Solve for x
    x = 1,792,482.09/1,138.30
  6. Step 6: Final answer
    x = 1,574.70

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.