Home / 7,920.72-11,888.28-4,226.10

Finding the Fourth Proportional to 7,920.72, 11,888.28 and 4,226.10

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Solution

The fourth proportional to 7,920.72, 11,888.28 and 4,226.10 is: 6,342.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.72 : 11,888.28 = 4,226.10 : x
  2. Step 2: Convert to fraction form
    7,920.72/11,888.28 = 4,226.10/x
  3. Step 3: Cross multiply
    7,920.72x = 11,888.28 × 4,226.10
  4. Step 4: Simplify right side
    7,920.72x = 50,241,060.11
  5. Step 5: Solve for x
    x = 50,241,060.11/7,920.72
  6. Step 6: Final answer
    x = 6,342.99

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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.