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Finding the Fourth Proportional to 9,012.74, 13,518.05 and 2,772.74

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Solution

The fourth proportional to 9,012.74, 13,518.05 and 2,772.74 is: 4,158.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.74 : 13,518.05 = 2,772.74 : x
  2. Step 2: Convert to fraction form
    9,012.74/13,518.05 = 2,772.74/x
  3. Step 3: Cross multiply
    9,012.74x = 13,518.05 × 2,772.74
  4. Step 4: Simplify right side
    9,012.74x = 37,482,024.09
  5. Step 5: Solve for x
    x = 37,482,024.09/9,012.74
  6. Step 6: Final answer
    x = 4,158.78

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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.