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Finding the Fourth Proportional to 8,368.40, 12,552.60 and 3,173.60

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Solution

The fourth proportional to 8,368.40, 12,552.60 and 3,173.60 is: 4,760.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.40 : 12,552.60 = 3,173.60 : x
  2. Step 2: Convert to fraction form
    8,368.40/12,552.60 = 3,173.60/x
  3. Step 3: Cross multiply
    8,368.40x = 12,552.60 × 3,173.60
  4. Step 4: Simplify right side
    8,368.40x = 39,836,931.36
  5. Step 5: Solve for x
    x = 39,836,931.36/8,368.40
  6. Step 6: Final answer
    x = 4,760.40

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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.