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Finding the Fourth Proportional to 7,490.98, 11,235.41 and 2,559.90

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Solution

The fourth proportional to 7,490.98, 11,235.41 and 2,559.90 is: 3,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.98 : 11,235.41 = 2,559.90 : x
  2. Step 2: Convert to fraction form
    7,490.98/11,235.41 = 2,559.90/x
  3. Step 3: Cross multiply
    7,490.98x = 11,235.41 × 2,559.90
  4. Step 4: Simplify right side
    7,490.98x = 28,761,564.99
  5. Step 5: Solve for x
    x = 28,761,564.99/7,490.98
  6. Step 6: Final answer
    x = 3,839.49

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Double scale
Find fourth proportional to 7,491.98, 11,236.91 and 2,560.90
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.