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Finding the Fourth Proportional to 3,100.34, 4,623.99 and 2,990.99

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Solution

The fourth proportional to 3,100.34, 4,623.99 and 2,990.99 is: 4,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.34 : 4,623.99 = 2,990.99 : x
  2. Step 2: Convert to fraction form
    3,100.34/4,623.99 = 2,990.99/x
  3. Step 3: Cross multiply
    3,100.34x = 4,623.99 × 2,990.99
  4. Step 4: Simplify right side
    3,100.34x = 13,830,284.73
  5. Step 5: Solve for x
    x = 13,830,284.73/3,100.34
  6. Step 6: Final answer
    x = 4,460.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.