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Finding the Fourth Proportional to 2,160.46, 3,240.15 and 621.46

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Solution

The fourth proportional to 2,160.46, 3,240.15 and 621.46 is: 932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.46 : 3,240.15 = 621.46 : x
  2. Step 2: Convert to fraction form
    2,160.46/3,240.15 = 621.46/x
  3. Step 3: Cross multiply
    2,160.46x = 3,240.15 × 621.46
  4. Step 4: Simplify right side
    2,160.46x = 2,013,623.62
  5. Step 5: Solve for x
    x = 2,013,623.62/2,160.46
  6. Step 6: Final answer
    x = 932.03

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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.