Home / 8,789.73-12,129.53-4,810.76

Finding the Fourth Proportional to 8,789.73, 12,129.53 and 4,810.76

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Solution

The fourth proportional to 8,789.73, 12,129.53 and 4,810.76 is: 6,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.73 : 12,129.53 = 4,810.76 : x
  2. Step 2: Convert to fraction form
    8,789.73/12,129.53 = 4,810.76/x
  3. Step 3: Cross multiply
    8,789.73x = 12,129.53 × 4,810.76
  4. Step 4: Simplify right side
    8,789.73x = 58,352,257.74
  5. Step 5: Solve for x
    x = 58,352,257.74/8,789.73
  6. Step 6: Final answer
    x = 6,638.69

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Double scale
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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.