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Finding the Fourth Proportional to 5,611.56, 8,417.82 and 1,916.34

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Solution

The fourth proportional to 5,611.56, 8,417.82 and 1,916.34 is: 2,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.56 : 8,417.82 = 1,916.34 : x
  2. Step 2: Convert to fraction form
    5,611.56/8,417.82 = 1,916.34/x
  3. Step 3: Cross multiply
    5,611.56x = 8,417.82 × 1,916.34
  4. Step 4: Simplify right side
    5,611.56x = 16,131,405.18
  5. Step 5: Solve for x
    x = 16,131,405.18/5,611.56
  6. Step 6: Final answer
    x = 2,874.67

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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.