Home / 1,137.18-1,569.12-694.92

Finding the Fourth Proportional to 1,137.18, 1,569.12 and 694.92

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Solution

The fourth proportional to 1,137.18, 1,569.12 and 694.92 is: 958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.18 : 1,569.12 = 694.92 : x
  2. Step 2: Convert to fraction form
    1,137.18/1,569.12 = 694.92/x
  3. Step 3: Cross multiply
    1,137.18x = 1,569.12 × 694.92
  4. Step 4: Simplify right side
    1,137.18x = 1,090,412.87
  5. Step 5: Solve for x
    x = 1,090,412.87/1,137.18
  6. Step 6: Final answer
    x = 958.87

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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.