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Finding the Fourth Proportional to 5,557.21, 8,337.21 and 1,661.61

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Solution

The fourth proportional to 5,557.21, 8,337.21 and 1,661.61 is: 2,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,557.21 : 8,337.21 = 1,661.61 : x
  2. Step 2: Convert to fraction form
    5,557.21/8,337.21 = 1,661.61/x
  3. Step 3: Cross multiply
    5,557.21x = 8,337.21 × 1,661.61
  4. Step 4: Simplify right side
    5,557.21x = 13,853,149.82
  5. Step 5: Solve for x
    x = 13,853,149.82/5,557.21
  6. Step 6: Final answer
    x = 2,492.82

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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.