Home / 8,534.40-12,778.52-4,421.76

Finding the Fourth Proportional to 8,534.40, 12,778.52 and 4,421.76

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Solution

The fourth proportional to 8,534.40, 12,778.52 and 4,421.76 is: 6,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,534.40 : 12,778.52 = 4,421.76 : x
  2. Step 2: Convert to fraction form
    8,534.40/12,778.52 = 4,421.76/x
  3. Step 3: Cross multiply
    8,534.40x = 12,778.52 × 4,421.76
  4. Step 4: Simplify right side
    8,534.40x = 56,503,548.60
  5. Step 5: Solve for x
    x = 56,503,548.60/8,534.40
  6. Step 6: Final answer
    x = 6,620.68

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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.