Home / 5,420.68-8,131.02-5,070.76

Finding the Fourth Proportional to 5,420.68, 8,131.02 and 5,070.76

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Solution

The fourth proportional to 5,420.68, 8,131.02 and 5,070.76 is: 7,606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.68 : 8,131.02 = 5,070.76 : x
  2. Step 2: Convert to fraction form
    5,420.68/8,131.02 = 5,070.76/x
  3. Step 3: Cross multiply
    5,420.68x = 8,131.02 × 5,070.76
  4. Step 4: Simplify right side
    5,420.68x = 41,230,450.98
  5. Step 5: Solve for x
    x = 41,230,450.98/5,420.68
  6. Step 6: Final answer
    x = 7,606.14

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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.