Home / 2,942.28-4,417.28-1,972.72

Finding the Fourth Proportional to 2,942.28, 4,417.28 and 1,972.72

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Solution

The fourth proportional to 2,942.28, 4,417.28 and 1,972.72 is: 2,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.28 : 4,417.28 = 1,972.72 : x
  2. Step 2: Convert to fraction form
    2,942.28/4,417.28 = 1,972.72/x
  3. Step 3: Cross multiply
    2,942.28x = 4,417.28 × 1,972.72
  4. Step 4: Simplify right side
    2,942.28x = 8,714,056.60
  5. Step 5: Solve for x
    x = 8,714,056.60/2,942.28
  6. Step 6: Final answer
    x = 2,961.67

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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.