Home / 5,336.78-8,005.28-1,638.92

Finding the Fourth Proportional to 5,336.78, 8,005.28 and 1,638.92

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Solution

The fourth proportional to 5,336.78, 8,005.28 and 1,638.92 is: 2,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,336.78 : 8,005.28 = 1,638.92 : x
  2. Step 2: Convert to fraction form
    5,336.78/8,005.28 = 1,638.92/x
  3. Step 3: Cross multiply
    5,336.78x = 8,005.28 × 1,638.92
  4. Step 4: Simplify right side
    5,336.78x = 13,120,013.50
  5. Step 5: Solve for x
    x = 13,120,013.50/5,336.78
  6. Step 6: Final answer
    x = 2,458.41

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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.