Home / 2,939.81-4,056.80-1,613.49

Finding the Fourth Proportional to 2,939.81, 4,056.80 and 1,613.49

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Solution

The fourth proportional to 2,939.81, 4,056.80 and 1,613.49 is: 2,226.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.81 : 4,056.80 = 1,613.49 : x
  2. Step 2: Convert to fraction form
    2,939.81/4,056.80 = 1,613.49/x
  3. Step 3: Cross multiply
    2,939.81x = 4,056.80 × 1,613.49
  4. Step 4: Simplify right side
    2,939.81x = 6,545,577.88
  5. Step 5: Solve for x
    x = 6,545,577.88/2,939.81
  6. Step 6: Final answer
    x = 2,226.53

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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.