Home / 5,420.89-8,131.88-1,472.22

Finding the Fourth Proportional to 5,420.89, 8,131.88 and 1,472.22

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Solution

The fourth proportional to 5,420.89, 8,131.88 and 1,472.22 is: 2,208.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.89 : 8,131.88 = 1,472.22 : x
  2. Step 2: Convert to fraction form
    5,420.89/8,131.88 = 1,472.22/x
  3. Step 3: Cross multiply
    5,420.89x = 8,131.88 × 1,472.22
  4. Step 4: Simplify right side
    5,420.89x = 11,971,868.35
  5. Step 5: Solve for x
    x = 11,971,868.35/5,420.89
  6. Step 6: Final answer
    x = 2,208.47

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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.