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Finding the Fourth Proportional to 8,312.55, 12,458.43 and 4,153.73

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Solution

The fourth proportional to 8,312.55, 12,458.43 and 4,153.73 is: 6,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.55 : 12,458.43 = 4,153.73 : x
  2. Step 2: Convert to fraction form
    8,312.55/12,458.43 = 4,153.73/x
  3. Step 3: Cross multiply
    8,312.55x = 12,458.43 × 4,153.73
  4. Step 4: Simplify right side
    8,312.55x = 51,748,892.15
  5. Step 5: Solve for x
    x = 51,748,892.15/8,312.55
  6. Step 6: Final answer
    x = 6,225.39

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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.