Home / 8,916.15-13,374.60-3,072.78

Finding the Fourth Proportional to 8,916.15, 13,374.60 and 3,072.78

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Solution

The fourth proportional to 8,916.15, 13,374.60 and 3,072.78 is: 4,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.15 : 13,374.60 = 3,072.78 : x
  2. Step 2: Convert to fraction form
    8,916.15/13,374.60 = 3,072.78/x
  3. Step 3: Cross multiply
    8,916.15x = 13,374.60 × 3,072.78
  4. Step 4: Simplify right side
    8,916.15x = 41,097,203.39
  5. Step 5: Solve for x
    x = 41,097,203.39/8,916.15
  6. Step 6: Final answer
    x = 4,609.30

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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.