Home / 7,818.75-10,789.88-4,281.96

Finding the Fourth Proportional to 7,818.75, 10,789.88 and 4,281.96

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Solution

The fourth proportional to 7,818.75, 10,789.88 and 4,281.96 is: 5,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.75 : 10,789.88 = 4,281.96 : x
  2. Step 2: Convert to fraction form
    7,818.75/10,789.88 = 4,281.96/x
  3. Step 3: Cross multiply
    7,818.75x = 10,789.88 × 4,281.96
  4. Step 4: Simplify right side
    7,818.75x = 46,201,889.75
  5. Step 5: Solve for x
    x = 46,201,889.75/7,818.75
  6. Step 6: Final answer
    x = 5,909.11

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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.