Home / 8,421.66-11,622.99-4,885.98

Finding the Fourth Proportional to 8,421.66, 11,622.99 and 4,885.98

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Solution

The fourth proportional to 8,421.66, 11,622.99 and 4,885.98 is: 6,743.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.66 : 11,622.99 = 4,885.98 : x
  2. Step 2: Convert to fraction form
    8,421.66/11,622.99 = 4,885.98/x
  3. Step 3: Cross multiply
    8,421.66x = 11,622.99 × 4,885.98
  4. Step 4: Simplify right side
    8,421.66x = 56,789,696.68
  5. Step 5: Solve for x
    x = 56,789,696.68/8,421.66
  6. Step 6: Final answer
    x = 6,743.29

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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.