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Finding the Fourth Proportional to 2,939.48, 4,056.48 and 1,613.22

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Solution

The fourth proportional to 2,939.48, 4,056.48 and 1,613.22 is: 2,226.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.48 : 4,056.48 = 1,613.22 : x
  2. Step 2: Convert to fraction form
    2,939.48/4,056.48 = 1,613.22/x
  3. Step 3: Cross multiply
    2,939.48x = 4,056.48 × 1,613.22
  4. Step 4: Simplify right side
    2,939.48x = 6,543,994.67
  5. Step 5: Solve for x
    x = 6,543,994.67/2,939.48
  6. Step 6: Final answer
    x = 2,226.24

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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.