Home / 3,665.16-5,490.65-2,279.05

Finding the Fourth Proportional to 3,665.16, 5,490.65 and 2,279.05

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Solution

The fourth proportional to 3,665.16, 5,490.65 and 2,279.05 is: 3,414.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.16 : 5,490.65 = 2,279.05 : x
  2. Step 2: Convert to fraction form
    3,665.16/5,490.65 = 2,279.05/x
  3. Step 3: Cross multiply
    3,665.16x = 5,490.65 × 2,279.05
  4. Step 4: Simplify right side
    3,665.16x = 12,513,457.85
  5. Step 5: Solve for x
    x = 12,513,457.85/3,665.16
  6. Step 6: Final answer
    x = 3,414.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.