Home / 2,939.79-4,056.98-1,613.49

Finding the Fourth Proportional to 2,939.79, 4,056.98 and 1,613.49

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Solution

The fourth proportional to 2,939.79, 4,056.98 and 1,613.49 is: 2,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.79 : 4,056.98 = 1,613.49 : x
  2. Step 2: Convert to fraction form
    2,939.79/4,056.98 = 1,613.49/x
  3. Step 3: Cross multiply
    2,939.79x = 4,056.98 × 1,613.49
  4. Step 4: Simplify right side
    2,939.79x = 6,545,896.20
  5. Step 5: Solve for x
    x = 6,545,896.20/2,939.79
  6. Step 6: Final answer
    x = 2,226.66

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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.