Home / 7,420.55-11,128.26-2,154.13

Finding the Fourth Proportional to 7,420.55, 11,128.26 and 2,154.13

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Solution

The fourth proportional to 7,420.55, 11,128.26 and 2,154.13 is: 3,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.55 : 11,128.26 = 2,154.13 : x
  2. Step 2: Convert to fraction form
    7,420.55/11,128.26 = 2,154.13/x
  3. Step 3: Cross multiply
    7,420.55x = 11,128.26 × 2,154.13
  4. Step 4: Simplify right side
    7,420.55x = 23,971,716.02
  5. Step 5: Solve for x
    x = 23,971,716.02/7,420.55
  6. Step 6: Final answer
    x = 3,230.45

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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.