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Finding the Fourth Proportional to 3,007.85, 4,511.93 and 929.28

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Solution

The fourth proportional to 3,007.85, 4,511.93 and 929.28 is: 1,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.85 : 4,511.93 = 929.28 : x
  2. Step 2: Convert to fraction form
    3,007.85/4,511.93 = 929.28/x
  3. Step 3: Cross multiply
    3,007.85x = 4,511.93 × 929.28
  4. Step 4: Simplify right side
    3,007.85x = 4,192,841.66
  5. Step 5: Solve for x
    x = 4,192,841.66/3,007.85
  6. Step 6: Final answer
    x = 1,393.97

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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.