Home / 6,947.62-10,421.38-5,905.15

Finding the Fourth Proportional to 6,947.62, 10,421.38 and 5,905.15

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Solution

The fourth proportional to 6,947.62, 10,421.38 and 5,905.15 is: 8,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,947.62 : 10,421.38 = 5,905.15 : x
  2. Step 2: Convert to fraction form
    6,947.62/10,421.38 = 5,905.15/x
  3. Step 3: Cross multiply
    6,947.62x = 10,421.38 × 5,905.15
  4. Step 4: Simplify right side
    6,947.62x = 61,539,760.22
  5. Step 5: Solve for x
    x = 61,539,760.22/6,947.62
  6. Step 6: Final answer
    x = 8,857.68

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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.