Home / 3,381.90-4,666.98-1,889.78

Finding the Fourth Proportional to 3,381.90, 4,666.98 and 1,889.78

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Solution

The fourth proportional to 3,381.90, 4,666.98 and 1,889.78 is: 2,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.90 : 4,666.98 = 1,889.78 : x
  2. Step 2: Convert to fraction form
    3,381.90/4,666.98 = 1,889.78/x
  3. Step 3: Cross multiply
    3,381.90x = 4,666.98 × 1,889.78
  4. Step 4: Simplify right side
    3,381.90x = 8,819,542.13
  5. Step 5: Solve for x
    x = 8,819,542.13/3,381.90
  6. Step 6: Final answer
    x = 2,607.87

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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.