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Finding the Fourth Proportional to 3,389.99, 4,675.12 and 2,799.50

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Solution

The fourth proportional to 3,389.99, 4,675.12 and 2,799.50 is: 3,860.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.99 : 4,675.12 = 2,799.50 : x
  2. Step 2: Convert to fraction form
    3,389.99/4,675.12 = 2,799.50/x
  3. Step 3: Cross multiply
    3,389.99x = 4,675.12 × 2,799.50
  4. Step 4: Simplify right side
    3,389.99x = 13,087,968.07
  5. Step 5: Solve for x
    x = 13,087,968.07/3,389.99
  6. Step 6: Final answer
    x = 3,860.77

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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.