Home / 3,119.76-4,303.62-2,279.16

Finding the Fourth Proportional to 3,119.76, 4,303.62 and 2,279.16

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Solution

The fourth proportional to 3,119.76, 4,303.62 and 2,279.16 is: 3,144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.76 : 4,303.62 = 2,279.16 : x
  2. Step 2: Convert to fraction form
    3,119.76/4,303.62 = 2,279.16/x
  3. Step 3: Cross multiply
    3,119.76x = 4,303.62 × 2,279.16
  4. Step 4: Simplify right side
    3,119.76x = 9,808,638.56
  5. Step 5: Solve for x
    x = 9,808,638.56/3,119.76
  6. Step 6: Final answer
    x = 3,144.04

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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.