Home / 5,098.91-7,643.69-1,981.00

Finding the Fourth Proportional to 5,098.91, 7,643.69 and 1,981.00

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Solution

The fourth proportional to 5,098.91, 7,643.69 and 1,981.00 is: 2,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,098.91 : 7,643.69 = 1,981.00 : x
  2. Step 2: Convert to fraction form
    5,098.91/7,643.69 = 1,981.00/x
  3. Step 3: Cross multiply
    5,098.91x = 7,643.69 × 1,981.00
  4. Step 4: Simplify right side
    5,098.91x = 15,142,120.88
  5. Step 5: Solve for x
    x = 15,142,120.88/5,098.91
  6. Step 6: Final answer
    x = 2,969.68

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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.