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Finding the Fourth Proportional to 1,951.56, 2,911.68 and 1,858.68

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Solution

The fourth proportional to 1,951.56, 2,911.68 and 1,858.68 is: 2,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.56 : 2,911.68 = 1,858.68 : x
  2. Step 2: Convert to fraction form
    1,951.56/2,911.68 = 1,858.68/x
  3. Step 3: Cross multiply
    1,951.56x = 2,911.68 × 1,858.68
  4. Step 4: Simplify right side
    1,951.56x = 5,411,881.38
  5. Step 5: Solve for x
    x = 5,411,881.38/1,951.56
  6. Step 6: Final answer
    x = 2,773.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.