Home / 2,864.12-4,287.90-1,983.80

Finding the Fourth Proportional to 2,864.12, 4,287.90 and 1,983.80

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Solution

The fourth proportional to 2,864.12, 4,287.90 and 1,983.80 is: 2,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.12 : 4,287.90 = 1,983.80 : x
  2. Step 2: Convert to fraction form
    2,864.12/4,287.90 = 1,983.80/x
  3. Step 3: Cross multiply
    2,864.12x = 4,287.90 × 1,983.80
  4. Step 4: Simplify right side
    2,864.12x = 8,506,336.02
  5. Step 5: Solve for x
    x = 8,506,336.02/2,864.12
  6. Step 6: Final answer
    x = 2,969.96

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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.