Home / 7,811.25-10,779.78-4,274.46

Finding the Fourth Proportional to 7,811.25, 10,779.78 and 4,274.46

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Solution

The fourth proportional to 7,811.25, 10,779.78 and 4,274.46 is: 5,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.25 : 10,779.78 = 4,274.46 : x
  2. Step 2: Convert to fraction form
    7,811.25/10,779.78 = 4,274.46/x
  3. Step 3: Cross multiply
    7,811.25x = 10,779.78 × 4,274.46
  4. Step 4: Simplify right side
    7,811.25x = 46,077,663.15
  5. Step 5: Solve for x
    x = 46,077,663.15/7,811.25
  6. Step 6: Final answer
    x = 5,898.89

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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.