Home / 2,939.30-4,056.28-1,613.12

Finding the Fourth Proportional to 2,939.30, 4,056.28 and 1,613.12

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Solution

The fourth proportional to 2,939.30, 4,056.28 and 1,613.12 is: 2,226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.30 : 4,056.28 = 1,613.12 : x
  2. Step 2: Convert to fraction form
    2,939.30/4,056.28 = 1,613.12/x
  3. Step 3: Cross multiply
    2,939.30x = 4,056.28 × 1,613.12
  4. Step 4: Simplify right side
    2,939.30x = 6,543,281.60
  5. Step 5: Solve for x
    x = 6,543,281.60/2,939.30
  6. Step 6: Final answer
    x = 2,226.14

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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.