Home / 4,287.30-6,426.15-1,821.70

Finding the Fourth Proportional to 4,287.30, 6,426.15 and 1,821.70

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Solution

The fourth proportional to 4,287.30, 6,426.15 and 1,821.70 is: 2,730.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.30 : 6,426.15 = 1,821.70 : x
  2. Step 2: Convert to fraction form
    4,287.30/6,426.15 = 1,821.70/x
  3. Step 3: Cross multiply
    4,287.30x = 6,426.15 × 1,821.70
  4. Step 4: Simplify right side
    4,287.30x = 11,706,517.46
  5. Step 5: Solve for x
    x = 11,706,517.46/4,287.30
  6. Step 6: Final answer
    x = 2,730.51

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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.