Home / 7,621.41-11,426.85-2,622.45

Finding the Fourth Proportional to 7,621.41, 11,426.85 and 2,622.45

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Solution

The fourth proportional to 7,621.41, 11,426.85 and 2,622.45 is: 3,931.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.41 : 11,426.85 = 2,622.45 : x
  2. Step 2: Convert to fraction form
    7,621.41/11,426.85 = 2,622.45/x
  3. Step 3: Cross multiply
    7,621.41x = 11,426.85 × 2,622.45
  4. Step 4: Simplify right side
    7,621.41x = 29,966,342.78
  5. Step 5: Solve for x
    x = 29,966,342.78/7,621.41
  6. Step 6: Final answer
    x = 3,931.86

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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.