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Finding the Fourth Proportional to 3,007.57, 4,511.40 and 816.52

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Solution

The fourth proportional to 3,007.57, 4,511.40 and 816.52 is: 1,224.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.57 : 4,511.40 = 816.52 : x
  2. Step 2: Convert to fraction form
    3,007.57/4,511.40 = 816.52/x
  3. Step 3: Cross multiply
    3,007.57x = 4,511.40 × 816.52
  4. Step 4: Simplify right side
    3,007.57x = 3,683,648.33
  5. Step 5: Solve for x
    x = 3,683,648.33/3,007.57
  6. Step 6: Final answer
    x = 1,224.79

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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.