Home / 1,176.40-1,622.90-827.28

Finding the Fourth Proportional to 1,176.40, 1,622.90 and 827.28

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Solution

The fourth proportional to 1,176.40, 1,622.90 and 827.28 is: 1,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.40 : 1,622.90 = 827.28 : x
  2. Step 2: Convert to fraction form
    1,176.40/1,622.90 = 827.28/x
  3. Step 3: Cross multiply
    1,176.40x = 1,622.90 × 827.28
  4. Step 4: Simplify right side
    1,176.40x = 1,342,592.71
  5. Step 5: Solve for x
    x = 1,342,592.71/1,176.40
  6. Step 6: Final answer
    x = 1,141.27

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1.5x scale

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.