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Finding the Fourth Proportional to 4,611.15, 6,916.72 and 1,148.40

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Solution

The fourth proportional to 4,611.15, 6,916.72 and 1,148.40 is: 1,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.15 : 6,916.72 = 1,148.40 : x
  2. Step 2: Convert to fraction form
    4,611.15/6,916.72 = 1,148.40/x
  3. Step 3: Cross multiply
    4,611.15x = 6,916.72 × 1,148.40
  4. Step 4: Simplify right side
    4,611.15x = 7,943,161.25
  5. Step 5: Solve for x
    x = 7,943,161.25/4,611.15
  6. Step 6: Final answer
    x = 1,722.60

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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.