Home / 1,135.28-1,703.46-1,078.94

Finding the Fourth Proportional to 1,135.28, 1,703.46 and 1,078.94

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Solution

The fourth proportional to 1,135.28, 1,703.46 and 1,078.94 is: 1,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.28 : 1,703.46 = 1,078.94 : x
  2. Step 2: Convert to fraction form
    1,135.28/1,703.46 = 1,078.94/x
  3. Step 3: Cross multiply
    1,135.28x = 1,703.46 × 1,078.94
  4. Step 4: Simplify right side
    1,135.28x = 1,837,931.13
  5. Step 5: Solve for x
    x = 1,837,931.13/1,135.28
  6. Step 6: Final answer
    x = 1,618.92

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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.