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Finding the Fourth Proportional to 4,719.38, 7,079.09 and 1,256.63

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Solution

The fourth proportional to 4,719.38, 7,079.09 and 1,256.63 is: 1,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,719.38 : 7,079.09 = 1,256.63 : x
  2. Step 2: Convert to fraction form
    4,719.38/7,079.09 = 1,256.63/x
  3. Step 3: Cross multiply
    4,719.38x = 7,079.09 × 1,256.63
  4. Step 4: Simplify right side
    4,719.38x = 8,895,755.19
  5. Step 5: Solve for x
    x = 8,895,755.19/4,719.38
  6. Step 6: Final answer
    x = 1,884.94

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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.