Home / 7,811.45-10,779.82-4,274.89

Finding the Fourth Proportional to 7,811.45, 10,779.82 and 4,274.89

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Solution

The fourth proportional to 7,811.45, 10,779.82 and 4,274.89 is: 5,899.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.45 : 10,779.82 = 4,274.89 : x
  2. Step 2: Convert to fraction form
    7,811.45/10,779.82 = 4,274.89/x
  3. Step 3: Cross multiply
    7,811.45x = 10,779.82 × 4,274.89
  4. Step 4: Simplify right side
    7,811.45x = 46,082,507.08
  5. Step 5: Solve for x
    x = 46,082,507.08/7,811.45
  6. Step 6: Final answer
    x = 5,899.35

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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.