Home / 3,962.48-5,946.80-1,990.09

Finding the Fourth Proportional to 3,962.48, 5,946.80 and 1,990.09

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Solution

The fourth proportional to 3,962.48, 5,946.80 and 1,990.09 is: 2,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,962.48 : 5,946.80 = 1,990.09 : x
  2. Step 2: Convert to fraction form
    3,962.48/5,946.80 = 1,990.09/x
  3. Step 3: Cross multiply
    3,962.48x = 5,946.80 × 1,990.09
  4. Step 4: Simplify right side
    3,962.48x = 11,834,657.32
  5. Step 5: Solve for x
    x = 11,834,657.32/3,962.48
  6. Step 6: Final answer
    x = 2,986.68

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1.5x scale

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.