Home / 2,858.20-4,287.30-1,983.40

Finding the Fourth Proportional to 2,858.20, 4,287.30 and 1,983.40

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Solution

The fourth proportional to 2,858.20, 4,287.30 and 1,983.40 is: 2,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.20 : 4,287.30 = 1,983.40 : x
  2. Step 2: Convert to fraction form
    2,858.20/4,287.30 = 1,983.40/x
  3. Step 3: Cross multiply
    2,858.20x = 4,287.30 × 1,983.40
  4. Step 4: Simplify right side
    2,858.20x = 8,503,430.82
  5. Step 5: Solve for x
    x = 8,503,430.82/2,858.20
  6. Step 6: Final answer
    x = 2,975.10

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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.