Home / 7,621.61-11,439.63-3,926.39

Finding the Fourth Proportional to 7,621.61, 11,439.63 and 3,926.39

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Solution

The fourth proportional to 7,621.61, 11,439.63 and 3,926.39 is: 5,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.61 : 11,439.63 = 3,926.39 : x
  2. Step 2: Convert to fraction form
    7,621.61/11,439.63 = 3,926.39/x
  3. Step 3: Cross multiply
    7,621.61x = 11,439.63 × 3,926.39
  4. Step 4: Simplify right side
    7,621.61x = 44,916,391.64
  5. Step 5: Solve for x
    x = 44,916,391.64/7,621.61
  6. Step 6: Final answer
    x = 5,893.30

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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.