Home / 6,429.70-8,873.05-3,777.15

Finding the Fourth Proportional to 6,429.70, 8,873.05 and 3,777.15

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Solution

The fourth proportional to 6,429.70, 8,873.05 and 3,777.15 is: 5,212.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.70 : 8,873.05 = 3,777.15 : x
  2. Step 2: Convert to fraction form
    6,429.70/8,873.05 = 3,777.15/x
  3. Step 3: Cross multiply
    6,429.70x = 8,873.05 × 3,777.15
  4. Step 4: Simplify right side
    6,429.70x = 33,514,840.81
  5. Step 5: Solve for x
    x = 33,514,840.81/6,429.70
  6. Step 6: Final answer
    x = 5,212.50

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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.