Home / 7,811.27-10,779.56-4,274.49

Finding the Fourth Proportional to 7,811.27, 10,779.56 and 4,274.49

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Solution

The fourth proportional to 7,811.27, 10,779.56 and 4,274.49 is: 5,898.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.27 : 10,779.56 = 4,274.49 : x
  2. Step 2: Convert to fraction form
    7,811.27/10,779.56 = 4,274.49/x
  3. Step 3: Cross multiply
    7,811.27x = 10,779.56 × 4,274.49
  4. Step 4: Simplify right side
    7,811.27x = 46,077,075.66
  5. Step 5: Solve for x
    x = 46,077,075.66/7,811.27
  6. Step 6: Final answer
    x = 5,898.79

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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.