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Finding the Fourth Proportional to 8,146.85, 12,210.21 and 4,639.82

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Solution

The fourth proportional to 8,146.85, 12,210.21 and 4,639.82 is: 6,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.85 : 12,210.21 = 4,639.82 : x
  2. Step 2: Convert to fraction form
    8,146.85/12,210.21 = 4,639.82/x
  3. Step 3: Cross multiply
    8,146.85x = 12,210.21 × 4,639.82
  4. Step 4: Simplify right side
    8,146.85x = 56,653,115.51
  5. Step 5: Solve for x
    x = 56,653,115.51/8,146.85
  6. Step 6: Final answer
    x = 6,953.99

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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.