Home / 3,389.20-4,677.12-1,897.13

Finding the Fourth Proportional to 3,389.20, 4,677.12 and 1,897.13

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Solution

The fourth proportional to 3,389.20, 4,677.12 and 1,897.13 is: 2,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.20 : 4,677.12 = 1,897.13 : x
  2. Step 2: Convert to fraction form
    3,389.20/4,677.12 = 1,897.13/x
  3. Step 3: Cross multiply
    3,389.20x = 4,677.12 × 1,897.13
  4. Step 4: Simplify right side
    3,389.20x = 8,873,104.67
  5. Step 5: Solve for x
    x = 8,873,104.67/3,389.20
  6. Step 6: Final answer
    x = 2,618.05

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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.