Home / 7,811.21-10,779.45-4,226.15

Finding the Fourth Proportional to 7,811.21, 10,779.45 and 4,226.15

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Solution

The fourth proportional to 7,811.21, 10,779.45 and 4,226.15 is: 5,832.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.21 : 10,779.45 = 4,226.15 : x
  2. Step 2: Convert to fraction form
    7,811.21/10,779.45 = 4,226.15/x
  3. Step 3: Cross multiply
    7,811.21x = 10,779.45 × 4,226.15
  4. Step 4: Simplify right side
    7,811.21x = 45,555,599.57
  5. Step 5: Solve for x
    x = 45,555,599.57/7,811.21
  6. Step 6: Final answer
    x = 5,832.08

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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.