Home / 7,811.42-10,779.76-4,274.64

Finding the Fourth Proportional to 7,811.42, 10,779.76 and 4,274.64

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Solution

The fourth proportional to 7,811.42, 10,779.76 and 4,274.64 is: 5,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.42 : 10,779.76 = 4,274.64 : x
  2. Step 2: Convert to fraction form
    7,811.42/10,779.76 = 4,274.64/x
  3. Step 3: Cross multiply
    7,811.42x = 10,779.76 × 4,274.64
  4. Step 4: Simplify right side
    7,811.42x = 46,079,593.29
  5. Step 5: Solve for x
    x = 46,079,593.29/7,811.42
  6. Step 6: Final answer
    x = 5,899.00

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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.