Home / 8,789.46-12,129.60-4,810.95

Finding the Fourth Proportional to 8,789.46, 12,129.60 and 4,810.95

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Solution

The fourth proportional to 8,789.46, 12,129.60 and 4,810.95 is: 6,639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.46 : 12,129.60 = 4,810.95 : x
  2. Step 2: Convert to fraction form
    8,789.46/12,129.60 = 4,810.95/x
  3. Step 3: Cross multiply
    8,789.46x = 12,129.60 × 4,810.95
  4. Step 4: Simplify right side
    8,789.46x = 58,354,899.12
  5. Step 5: Solve for x
    x = 58,354,899.12/8,789.46
  6. Step 6: Final answer
    x = 6,639.19

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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.