Home / 8,109.78-12,166.29-2,916.06

Finding the Fourth Proportional to 8,109.78, 12,166.29 and 2,916.06

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Solution

The fourth proportional to 8,109.78, 12,166.29 and 2,916.06 is: 4,374.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.78 : 12,166.29 = 2,916.06 : x
  2. Step 2: Convert to fraction form
    8,109.78/12,166.29 = 2,916.06/x
  3. Step 3: Cross multiply
    8,109.78x = 12,166.29 × 2,916.06
  4. Step 4: Simplify right side
    8,109.78x = 35,477,631.62
  5. Step 5: Solve for x
    x = 35,477,631.62/8,109.78
  6. Step 6: Final answer
    x = 4,374.67

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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.