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Finding the Fourth Proportional to 7,090.13, 10,635.60 and 5,426.60

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Solution

The fourth proportional to 7,090.13, 10,635.60 and 5,426.60 is: 8,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.13 : 10,635.60 = 5,426.60 : x
  2. Step 2: Convert to fraction form
    7,090.13/10,635.60 = 5,426.60/x
  3. Step 3: Cross multiply
    7,090.13x = 10,635.60 × 5,426.60
  4. Step 4: Simplify right side
    7,090.13x = 57,715,114.13
  5. Step 5: Solve for x
    x = 57,715,114.13/7,090.13
  6. Step 6: Final answer
    x = 8,140.20

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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.