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Finding the Fourth Proportional to 1,659.41, 2,289.96 and 951.38

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Solution

The fourth proportional to 1,659.41, 2,289.96 and 951.38 is: 1,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.41 : 2,289.96 = 951.38 : x
  2. Step 2: Convert to fraction form
    1,659.41/2,289.96 = 951.38/x
  3. Step 3: Cross multiply
    1,659.41x = 2,289.96 × 951.38
  4. Step 4: Simplify right side
    1,659.41x = 2,178,622.14
  5. Step 5: Solve for x
    x = 2,178,622.14/1,659.41
  6. Step 6: Final answer
    x = 1,312.89

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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.