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Finding the Fourth Proportional to 2,765.63, 4,148.44 and 916.25

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Solution

The fourth proportional to 2,765.63, 4,148.44 and 916.25 is: 1,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.63 : 4,148.44 = 916.25 : x
  2. Step 2: Convert to fraction form
    2,765.63/4,148.44 = 916.25/x
  3. Step 3: Cross multiply
    2,765.63x = 4,148.44 × 916.25
  4. Step 4: Simplify right side
    2,765.63x = 3,801,008.15
  5. Step 5: Solve for x
    x = 3,801,008.15/2,765.63
  6. Step 6: Final answer
    x = 1,374.37

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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.