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Finding the Fourth Proportional to 2,951.93, 4,424.01 and 1,389.81

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Solution

The fourth proportional to 2,951.93, 4,424.01 and 1,389.81 is: 2,082.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.93 : 4,424.01 = 1,389.81 : x
  2. Step 2: Convert to fraction form
    2,951.93/4,424.01 = 1,389.81/x
  3. Step 3: Cross multiply
    2,951.93x = 4,424.01 × 1,389.81
  4. Step 4: Simplify right side
    2,951.93x = 6,148,533.34
  5. Step 5: Solve for x
    x = 6,148,533.34/2,951.93
  6. Step 6: Final answer
    x = 2,082.89

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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.