Home / 4,220.43-6,330.17-1,621.55

Finding the Fourth Proportional to 4,220.43, 6,330.17 and 1,621.55

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Solution

The fourth proportional to 4,220.43, 6,330.17 and 1,621.55 is: 2,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.43 : 6,330.17 = 1,621.55 : x
  2. Step 2: Convert to fraction form
    4,220.43/6,330.17 = 1,621.55/x
  3. Step 3: Cross multiply
    4,220.43x = 6,330.17 × 1,621.55
  4. Step 4: Simplify right side
    4,220.43x = 10,264,647.40
  5. Step 5: Solve for x
    x = 10,264,647.40/4,220.43
  6. Step 6: Final answer
    x = 2,432.13

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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.