Home / 6,428.70-8,879.94-4,435.74

Finding the Fourth Proportional to 6,428.70, 8,879.94 and 4,435.74

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Solution

The fourth proportional to 6,428.70, 8,879.94 and 4,435.74 is: 6,127.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.70 : 8,879.94 = 4,435.74 : x
  2. Step 2: Convert to fraction form
    6,428.70/8,879.94 = 4,435.74/x
  3. Step 3: Cross multiply
    6,428.70x = 8,879.94 × 4,435.74
  4. Step 4: Simplify right side
    6,428.70x = 39,389,105.06
  5. Step 5: Solve for x
    x = 39,389,105.06/6,428.70
  6. Step 6: Final answer
    x = 6,127.07

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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.