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Finding the Fourth Proportional to 7,408.79, 11,113.19 and 3,026.25

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Solution

The fourth proportional to 7,408.79, 11,113.19 and 3,026.25 is: 4,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.79 : 11,113.19 = 3,026.25 : x
  2. Step 2: Convert to fraction form
    7,408.79/11,113.19 = 3,026.25/x
  3. Step 3: Cross multiply
    7,408.79x = 11,113.19 × 3,026.25
  4. Step 4: Simplify right side
    7,408.79x = 33,631,298.80
  5. Step 5: Solve for x
    x = 33,631,298.80/7,408.79
  6. Step 6: Final answer
    x = 4,539.38

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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.