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Finding the Fourth Proportional to 4,000.98, 6,001.49 and 1,920.50

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Solution

The fourth proportional to 4,000.98, 6,001.49 and 1,920.50 is: 2,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.98 : 6,001.49 = 1,920.50 : x
  2. Step 2: Convert to fraction form
    4,000.98/6,001.49 = 1,920.50/x
  3. Step 3: Cross multiply
    4,000.98x = 6,001.49 × 1,920.50
  4. Step 4: Simplify right side
    4,000.98x = 11,525,821.94
  5. Step 5: Solve for x
    x = 11,525,821.94/4,000.98
  6. Step 6: Final answer
    x = 2,880.75

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Half scale
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Double scale
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Similar ratio
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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.