Home / 4,190.13-6,278.40-2,215.67

Finding the Fourth Proportional to 4,190.13, 6,278.40 and 2,215.67

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Solution

The fourth proportional to 4,190.13, 6,278.40 and 2,215.67 is: 3,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.13 : 6,278.40 = 2,215.67 : x
  2. Step 2: Convert to fraction form
    4,190.13/6,278.40 = 2,215.67/x
  3. Step 3: Cross multiply
    4,190.13x = 6,278.40 × 2,215.67
  4. Step 4: Simplify right side
    4,190.13x = 13,910,831.14
  5. Step 5: Solve for x
    x = 13,910,831.14/4,190.13
  6. Step 6: Final answer
    x = 3,319.90

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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.