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Finding the Fourth Proportional to 8,307.56, 12,454.36 and 3,380.74

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Solution

The fourth proportional to 8,307.56, 12,454.36 and 3,380.74 is: 5,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,307.56 : 12,454.36 = 3,380.74 : x
  2. Step 2: Convert to fraction form
    8,307.56/12,454.36 = 3,380.74/x
  3. Step 3: Cross multiply
    8,307.56x = 12,454.36 × 3,380.74
  4. Step 4: Simplify right side
    8,307.56x = 42,104,913.44
  5. Step 5: Solve for x
    x = 42,104,913.44/8,307.56
  6. Step 6: Final answer
    x = 5,068.26

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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.