Home / 7,877.12-11,818.40-3,497.64

Finding the Fourth Proportional to 7,877.12, 11,818.40 and 3,497.64

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Solution

The fourth proportional to 7,877.12, 11,818.40 and 3,497.64 is: 5,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.12 : 11,818.40 = 3,497.64 : x
  2. Step 2: Convert to fraction form
    7,877.12/11,818.40 = 3,497.64/x
  3. Step 3: Cross multiply
    7,877.12x = 11,818.40 × 3,497.64
  4. Step 4: Simplify right side
    7,877.12x = 41,336,508.58
  5. Step 5: Solve for x
    x = 41,336,508.58/7,877.12
  6. Step 6: Final answer
    x = 5,247.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.