Home / 4,287.80-6,426.90-1,822.20

Finding the Fourth Proportional to 4,287.80, 6,426.90 and 1,822.20

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Solution

The fourth proportional to 4,287.80, 6,426.90 and 1,822.20 is: 2,731.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.80 : 6,426.90 = 1,822.20 : x
  2. Step 2: Convert to fraction form
    4,287.80/6,426.90 = 1,822.20/x
  3. Step 3: Cross multiply
    4,287.80x = 6,426.90 × 1,822.20
  4. Step 4: Simplify right side
    4,287.80x = 11,711,097.18
  5. Step 5: Solve for x
    x = 11,711,097.18/4,287.80
  6. Step 6: Final answer
    x = 2,731.26

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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.