Home / 2,909.72-4,366.20-1,987.94

Finding the Fourth Proportional to 2,909.72, 4,366.20 and 1,987.94

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Solution

The fourth proportional to 2,909.72, 4,366.20 and 1,987.94 is: 2,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.72 : 4,366.20 = 1,987.94 : x
  2. Step 2: Convert to fraction form
    2,909.72/4,366.20 = 1,987.94/x
  3. Step 3: Cross multiply
    2,909.72x = 4,366.20 × 1,987.94
  4. Step 4: Simplify right side
    2,909.72x = 8,679,762.00
  5. Step 5: Solve for x
    x = 8,679,762.00/2,909.72
  6. Step 6: Final answer
    x = 2,983.02

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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.