Home / 4,679.85-6,455.29-2,790.22

Finding the Fourth Proportional to 4,679.85, 6,455.29 and 2,790.22

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Solution

The fourth proportional to 4,679.85, 6,455.29 and 2,790.22 is: 3,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.85 : 6,455.29 = 2,790.22 : x
  2. Step 2: Convert to fraction form
    4,679.85/6,455.29 = 2,790.22/x
  3. Step 3: Cross multiply
    4,679.85x = 6,455.29 × 2,790.22
  4. Step 4: Simplify right side
    4,679.85x = 18,011,679.26
  5. Step 5: Solve for x
    x = 18,011,679.26/4,679.85
  6. Step 6: Final answer
    x = 3,848.77

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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.