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Finding the Fourth Proportional to 8,155.92, 12,235.92 and 4,457.16

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Solution

The fourth proportional to 8,155.92, 12,235.92 and 4,457.16 is: 6,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.92 : 12,235.92 = 4,457.16 : x
  2. Step 2: Convert to fraction form
    8,155.92/12,235.92 = 4,457.16/x
  3. Step 3: Cross multiply
    8,155.92x = 12,235.92 × 4,457.16
  4. Step 4: Simplify right side
    8,155.92x = 54,537,453.19
  5. Step 5: Solve for x
    x = 54,537,453.19/8,155.92
  6. Step 6: Final answer
    x = 6,686.85

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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.