Home / 8,785.83-12,103.92-6,128.49

Finding the Fourth Proportional to 8,785.83, 12,103.92 and 6,128.49

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Solution

The fourth proportional to 8,785.83, 12,103.92 and 6,128.49 is: 8,443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.83 : 12,103.92 = 6,128.49 : x
  2. Step 2: Convert to fraction form
    8,785.83/12,103.92 = 6,128.49/x
  3. Step 3: Cross multiply
    8,785.83x = 12,103.92 × 6,128.49
  4. Step 4: Simplify right side
    8,785.83x = 74,178,752.68
  5. Step 5: Solve for x
    x = 74,178,752.68/8,785.83
  6. Step 6: Final answer
    x = 8,443.00

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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.