Home / 7,399.98-11,102.20-4,279.28

Finding the Fourth Proportional to 7,399.98, 11,102.20 and 4,279.28

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Solution

The fourth proportional to 7,399.98, 11,102.20 and 4,279.28 is: 6,420.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,399.98 : 11,102.20 = 4,279.28 : x
  2. Step 2: Convert to fraction form
    7,399.98/11,102.20 = 4,279.28/x
  3. Step 3: Cross multiply
    7,399.98x = 11,102.20 × 4,279.28
  4. Step 4: Simplify right side
    7,399.98x = 47,509,422.42
  5. Step 5: Solve for x
    x = 47,509,422.42/7,399.98
  6. Step 6: Final answer
    x = 6,420.21

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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.