Home / 6,429.79-8,873.36-3,777.18

Finding the Fourth Proportional to 6,429.79, 8,873.36 and 3,777.18

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Solution

The fourth proportional to 6,429.79, 8,873.36 and 3,777.18 is: 5,212.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.79 : 8,873.36 = 3,777.18 : x
  2. Step 2: Convert to fraction form
    6,429.79/8,873.36 = 3,777.18/x
  3. Step 3: Cross multiply
    6,429.79x = 8,873.36 × 3,777.18
  4. Step 4: Simplify right side
    6,429.79x = 33,516,261.17
  5. Step 5: Solve for x
    x = 33,516,261.17/6,429.79
  6. Step 6: Final answer
    x = 5,212.65

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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.