Home / 8,420.62-12,630.03-3,740.71

Finding the Fourth Proportional to 8,420.62, 12,630.03 and 3,740.71

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Solution

The fourth proportional to 8,420.62, 12,630.03 and 3,740.71 is: 5,610.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.62 : 12,630.03 = 3,740.71 : x
  2. Step 2: Convert to fraction form
    8,420.62/12,630.03 = 3,740.71/x
  3. Step 3: Cross multiply
    8,420.62x = 12,630.03 × 3,740.71
  4. Step 4: Simplify right side
    8,420.62x = 47,245,279.52
  5. Step 5: Solve for x
    x = 47,245,279.52/8,420.62
  6. Step 6: Final answer
    x = 5,610.67

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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.