Home / 3,389.66-4,677.75-1,897.64

Finding the Fourth Proportional to 3,389.66, 4,677.75 and 1,897.64

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Solution

The fourth proportional to 3,389.66, 4,677.75 and 1,897.64 is: 2,618.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.66 : 4,677.75 = 1,897.64 : x
  2. Step 2: Convert to fraction form
    3,389.66/4,677.75 = 1,897.64/x
  3. Step 3: Cross multiply
    3,389.66x = 4,677.75 × 1,897.64
  4. Step 4: Simplify right side
    3,389.66x = 8,876,662.12
  5. Step 5: Solve for x
    x = 8,876,662.12/3,389.66
  6. Step 6: Final answer
    x = 2,618.75

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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.