Home / 8,424.38-12,636.58-3,490.72

Finding the Fourth Proportional to 8,424.38, 12,636.58 and 3,490.72

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Solution

The fourth proportional to 8,424.38, 12,636.58 and 3,490.72 is: 5,236.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.38 : 12,636.58 = 3,490.72 : x
  2. Step 2: Convert to fraction form
    8,424.38/12,636.58 = 3,490.72/x
  3. Step 3: Cross multiply
    8,424.38x = 12,636.58 × 3,490.72
  4. Step 4: Simplify right side
    8,424.38x = 44,110,762.54
  5. Step 5: Solve for x
    x = 44,110,762.54/8,424.38
  6. Step 6: Final answer
    x = 5,236.08

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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.