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Finding the Fourth Proportional to 2,896.39, 4,344.90 and 947.89

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Solution

The fourth proportional to 2,896.39, 4,344.90 and 947.89 is: 1,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.39 : 4,344.90 = 947.89 : x
  2. Step 2: Convert to fraction form
    2,896.39/4,344.90 = 947.89/x
  3. Step 3: Cross multiply
    2,896.39x = 4,344.90 × 947.89
  4. Step 4: Simplify right side
    2,896.39x = 4,118,487.26
  5. Step 5: Solve for x
    x = 4,118,487.26/2,896.39
  6. Step 6: Final answer
    x = 1,421.94

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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.