Home / 6,430.73-8,877.30-3,778.31

Finding the Fourth Proportional to 6,430.73, 8,877.30 and 3,778.31

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Solution

The fourth proportional to 6,430.73, 8,877.30 and 3,778.31 is: 5,215.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.73 : 8,877.30 = 3,778.31 : x
  2. Step 2: Convert to fraction form
    6,430.73/8,877.30 = 3,778.31/x
  3. Step 3: Cross multiply
    6,430.73x = 8,877.30 × 3,778.31
  4. Step 4: Simplify right side
    6,430.73x = 33,541,128.08
  5. Step 5: Solve for x
    x = 33,541,128.08/6,430.73
  6. Step 6: Final answer
    x = 5,215.76

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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.