Home / 8,421.36-11,622.06-4,885.80

Finding the Fourth Proportional to 8,421.36, 11,622.06 and 4,885.80

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Solution

The fourth proportional to 8,421.36, 11,622.06 and 4,885.80 is: 6,742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.36 : 11,622.06 = 4,885.80 : x
  2. Step 2: Convert to fraction form
    8,421.36/11,622.06 = 4,885.80/x
  3. Step 3: Cross multiply
    8,421.36x = 11,622.06 × 4,885.80
  4. Step 4: Simplify right side
    8,421.36x = 56,783,060.75
  5. Step 5: Solve for x
    x = 56,783,060.75/8,421.36
  6. Step 6: Final answer
    x = 6,742.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.