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Finding the Fourth Proportional to 2,671.79, 4,006.66 and 916.27

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Solution

The fourth proportional to 2,671.79, 4,006.66 and 916.27 is: 1,374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.79 : 4,006.66 = 916.27 : x
  2. Step 2: Convert to fraction form
    2,671.79/4,006.66 = 916.27/x
  3. Step 3: Cross multiply
    2,671.79x = 4,006.66 × 916.27
  4. Step 4: Simplify right side
    2,671.79x = 3,671,174.63
  5. Step 5: Solve for x
    x = 3,671,174.63/2,671.79
  6. Step 6: Final answer
    x = 1,374.05

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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.