Home / 7,405.20-10,219.91-4,421.97

Finding the Fourth Proportional to 7,405.20, 10,219.91 and 4,421.97

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Solution

The fourth proportional to 7,405.20, 10,219.91 and 4,421.97 is: 6,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.20 : 10,219.91 = 4,421.97 : x
  2. Step 2: Convert to fraction form
    7,405.20/10,219.91 = 4,421.97/x
  3. Step 3: Cross multiply
    7,405.20x = 10,219.91 × 4,421.97
  4. Step 4: Simplify right side
    7,405.20x = 45,192,113.31
  5. Step 5: Solve for x
    x = 45,192,113.31/7,405.20
  6. Step 6: Final answer
    x = 6,102.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.