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Finding the Fourth Proportional to 8,810.70, 12,160.02 and 5,454.60

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Solution

The fourth proportional to 8,810.70, 12,160.02 and 5,454.60 is: 7,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.70 : 12,160.02 = 5,454.60 : x
  2. Step 2: Convert to fraction form
    8,810.70/12,160.02 = 5,454.60/x
  3. Step 3: Cross multiply
    8,810.70x = 12,160.02 × 5,454.60
  4. Step 4: Simplify right side
    8,810.70x = 66,328,045.09
  5. Step 5: Solve for x
    x = 66,328,045.09/8,810.70
  6. Step 6: Final answer
    x = 7,528.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.