Home / 4,218.20-6,328.20-1,621.13

Finding the Fourth Proportional to 4,218.20, 6,328.20 and 1,621.13

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Solution

The fourth proportional to 4,218.20, 6,328.20 and 1,621.13 is: 2,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.20 : 6,328.20 = 1,621.13 : x
  2. Step 2: Convert to fraction form
    4,218.20/6,328.20 = 1,621.13/x
  3. Step 3: Cross multiply
    4,218.20x = 6,328.20 × 1,621.13
  4. Step 4: Simplify right side
    4,218.20x = 10,258,803.23
  5. Step 5: Solve for x
    x = 10,258,803.23/4,218.20
  6. Step 6: Final answer
    x = 2,432.04

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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.