Home / 4,215.30-5,809.36-3,378.77

Finding the Fourth Proportional to 4,215.30, 5,809.36 and 3,378.77

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Solution

The fourth proportional to 4,215.30, 5,809.36 and 3,378.77 is: 4,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.30 : 5,809.36 = 3,378.77 : x
  2. Step 2: Convert to fraction form
    4,215.30/5,809.36 = 3,378.77/x
  3. Step 3: Cross multiply
    4,215.30x = 5,809.36 × 3,378.77
  4. Step 4: Simplify right side
    4,215.30x = 19,628,474.39
  5. Step 5: Solve for x
    x = 19,628,474.39/4,215.30
  6. Step 6: Final answer
    x = 4,656.48

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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.