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Finding the Fourth Proportional to 3,334.95, 4,602.87 and 1,990.89

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Solution

The fourth proportional to 3,334.95, 4,602.87 and 1,990.89 is: 2,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,334.95 : 4,602.87 = 1,990.89 : x
  2. Step 2: Convert to fraction form
    3,334.95/4,602.87 = 1,990.89/x
  3. Step 3: Cross multiply
    3,334.95x = 4,602.87 × 1,990.89
  4. Step 4: Simplify right side
    3,334.95x = 9,163,807.85
  5. Step 5: Solve for x
    x = 9,163,807.85/3,334.95
  6. Step 6: Final answer
    x = 2,747.81

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1.5x scale

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.