Home / 8,789.43-12,129.75-4,810.89

Finding the Fourth Proportional to 8,789.43, 12,129.75 and 4,810.89

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Solution

The fourth proportional to 8,789.43, 12,129.75 and 4,810.89 is: 6,639.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.43 : 12,129.75 = 4,810.89 : x
  2. Step 2: Convert to fraction form
    8,789.43/12,129.75 = 4,810.89/x
  3. Step 3: Cross multiply
    8,789.43x = 12,129.75 × 4,810.89
  4. Step 4: Simplify right side
    8,789.43x = 58,354,892.98
  5. Step 5: Solve for x
    x = 58,354,892.98/8,789.43
  6. Step 6: Final answer
    x = 6,639.21

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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.