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Finding the Fourth Proportional to 8,373.86, 12,559.93 and 4,212.17

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Solution

The fourth proportional to 8,373.86, 12,559.93 and 4,212.17 is: 6,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,373.86 : 12,559.93 = 4,212.17 : x
  2. Step 2: Convert to fraction form
    8,373.86/12,559.93 = 4,212.17/x
  3. Step 3: Cross multiply
    8,373.86x = 12,559.93 × 4,212.17
  4. Step 4: Simplify right side
    8,373.86x = 52,904,581.22
  5. Step 5: Solve for x
    x = 52,904,581.22/8,373.86
  6. Step 6: Final answer
    x = 6,317.82

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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.