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Finding the Fourth Proportional to 4,686.80, 7,022.10 and 2,216.30

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Solution

The fourth proportional to 4,686.80, 7,022.10 and 2,216.30 is: 3,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,686.80 : 7,022.10 = 2,216.30 : x
  2. Step 2: Convert to fraction form
    4,686.80/7,022.10 = 2,216.30/x
  3. Step 3: Cross multiply
    4,686.80x = 7,022.10 × 2,216.30
  4. Step 4: Simplify right side
    4,686.80x = 15,563,080.23
  5. Step 5: Solve for x
    x = 15,563,080.23/4,686.80
  6. Step 6: Final answer
    x = 3,320.62

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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.