Home / 8,427.70-11,629.40-4,890.57

Finding the Fourth Proportional to 8,427.70, 11,629.40 and 4,890.57

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Solution

The fourth proportional to 8,427.70, 11,629.40 and 4,890.57 is: 6,748.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.70 : 11,629.40 = 4,890.57 : x
  2. Step 2: Convert to fraction form
    8,427.70/11,629.40 = 4,890.57/x
  3. Step 3: Cross multiply
    8,427.70x = 11,629.40 × 4,890.57
  4. Step 4: Simplify right side
    8,427.70x = 56,874,394.76
  5. Step 5: Solve for x
    x = 56,874,394.76/8,427.70
  6. Step 6: Final answer
    x = 6,748.51

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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.