Home / 7,420.20-11,130.30-5,233.20

Finding the Fourth Proportional to 7,420.20, 11,130.30 and 5,233.20

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Solution

The fourth proportional to 7,420.20, 11,130.30 and 5,233.20 is: 7,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.20 : 11,130.30 = 5,233.20 : x
  2. Step 2: Convert to fraction form
    7,420.20/11,130.30 = 5,233.20/x
  3. Step 3: Cross multiply
    7,420.20x = 11,130.30 × 5,233.20
  4. Step 4: Simplify right side
    7,420.20x = 58,247,085.96
  5. Step 5: Solve for x
    x = 58,247,085.96/7,420.20
  6. Step 6: Final answer
    x = 7,849.80

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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.