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Finding the Fourth Proportional to 3,005.60, 4,508.36 and 814.32

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Solution

The fourth proportional to 3,005.60, 4,508.36 and 814.32 is: 1,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.60 : 4,508.36 = 814.32 : x
  2. Step 2: Convert to fraction form
    3,005.60/4,508.36 = 814.32/x
  3. Step 3: Cross multiply
    3,005.60x = 4,508.36 × 814.32
  4. Step 4: Simplify right side
    3,005.60x = 3,671,243.64
  5. Step 5: Solve for x
    x = 3,671,243.64/3,005.60
  6. Step 6: Final answer
    x = 1,221.47

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1.5x scale

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.