Home / 7,408.68-11,090.88-4,478.12

Finding the Fourth Proportional to 7,408.68, 11,090.88 and 4,478.12

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Solution

The fourth proportional to 7,408.68, 11,090.88 and 4,478.12 is: 6,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.68 : 11,090.88 = 4,478.12 : x
  2. Step 2: Convert to fraction form
    7,408.68/11,090.88 = 4,478.12/x
  3. Step 3: Cross multiply
    7,408.68x = 11,090.88 × 4,478.12
  4. Step 4: Simplify right side
    7,408.68x = 49,666,291.55
  5. Step 5: Solve for x
    x = 49,666,291.55/7,408.68
  6. Step 6: Final answer
    x = 6,703.80

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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.