Home / 8,789.07-12,128.49-4,810.08

Finding the Fourth Proportional to 8,789.07, 12,128.49 and 4,810.08

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Solution

The fourth proportional to 8,789.07, 12,128.49 and 4,810.08 is: 6,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.07 : 12,128.49 = 4,810.08 : x
  2. Step 2: Convert to fraction form
    8,789.07/12,128.49 = 4,810.08/x
  3. Step 3: Cross multiply
    8,789.07x = 12,128.49 × 4,810.08
  4. Step 4: Simplify right side
    8,789.07x = 58,339,007.18
  5. Step 5: Solve for x
    x = 58,339,007.18/8,789.07
  6. Step 6: Final answer
    x = 6,637.68

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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.