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Finding the Fourth Proportional to 2,143.70, 2,954.22 and 1,479.34

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Solution

The fourth proportional to 2,143.70, 2,954.22 and 1,479.34 is: 2,038.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.70 : 2,954.22 = 1,479.34 : x
  2. Step 2: Convert to fraction form
    2,143.70/2,954.22 = 1,479.34/x
  3. Step 3: Cross multiply
    2,143.70x = 2,954.22 × 1,479.34
  4. Step 4: Simplify right side
    2,143.70x = 4,370,295.81
  5. Step 5: Solve for x
    x = 4,370,295.81/2,143.70
  6. Step 6: Final answer
    x = 2,038.67

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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.