Home / 3,390.28-4,679.06-2,214.76

Finding the Fourth Proportional to 3,390.28, 4,679.06 and 2,214.76

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Solution

The fourth proportional to 3,390.28, 4,679.06 and 2,214.76 is: 3,056.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.28 : 4,679.06 = 2,214.76 : x
  2. Step 2: Convert to fraction form
    3,390.28/4,679.06 = 2,214.76/x
  3. Step 3: Cross multiply
    3,390.28x = 4,679.06 × 2,214.76
  4. Step 4: Simplify right side
    3,390.28x = 10,362,994.93
  5. Step 5: Solve for x
    x = 10,362,994.93/3,390.28
  6. Step 6: Final answer
    x = 3,056.68

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Half scale
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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.