Home / 2,972.04-4,099.77-1,909.96

Finding the Fourth Proportional to 2,972.04, 4,099.77 and 1,909.96

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Solution

The fourth proportional to 2,972.04, 4,099.77 and 1,909.96 is: 2,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.04 : 4,099.77 = 1,909.96 : x
  2. Step 2: Convert to fraction form
    2,972.04/4,099.77 = 1,909.96/x
  3. Step 3: Cross multiply
    2,972.04x = 4,099.77 × 1,909.96
  4. Step 4: Simplify right side
    2,972.04x = 7,830,396.71
  5. Step 5: Solve for x
    x = 7,830,396.71/2,972.04
  6. Step 6: Final answer
    x = 2,634.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.