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Finding the Fourth Proportional to 3,888.57, 5,832.89 and 1,423.47

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Solution

The fourth proportional to 3,888.57, 5,832.89 and 1,423.47 is: 2,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.57 : 5,832.89 = 1,423.47 : x
  2. Step 2: Convert to fraction form
    3,888.57/5,832.89 = 1,423.47/x
  3. Step 3: Cross multiply
    3,888.57x = 5,832.89 × 1,423.47
  4. Step 4: Simplify right side
    3,888.57x = 8,302,936.81
  5. Step 5: Solve for x
    x = 8,302,936.81/3,888.57
  6. Step 6: Final answer
    x = 2,135.22

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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.