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Finding the Fourth Proportional to 8,407.40, 12,612.21 and 4,460.67

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Solution

The fourth proportional to 8,407.40, 12,612.21 and 4,460.67 is: 6,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.40 : 12,612.21 = 4,460.67 : x
  2. Step 2: Convert to fraction form
    8,407.40/12,612.21 = 4,460.67/x
  3. Step 3: Cross multiply
    8,407.40x = 12,612.21 × 4,460.67
  4. Step 4: Simplify right side
    8,407.40x = 56,258,890.05
  5. Step 5: Solve for x
    x = 56,258,890.05/8,407.40
  6. Step 6: Final answer
    x = 6,691.60

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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.