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Finding the Fourth Proportional to 1,743.76, 2,406.39 and 947.07

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Solution

The fourth proportional to 1,743.76, 2,406.39 and 947.07 is: 1,306.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.76 : 2,406.39 = 947.07 : x
  2. Step 2: Convert to fraction form
    1,743.76/2,406.39 = 947.07/x
  3. Step 3: Cross multiply
    1,743.76x = 2,406.39 × 947.07
  4. Step 4: Simplify right side
    1,743.76x = 2,279,021.55
  5. Step 5: Solve for x
    x = 2,279,021.55/1,743.76
  6. Step 6: Final answer
    x = 1,306.96

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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.