Home / 4,459.24-6,690.78-2,120.91

Finding the Fourth Proportional to 4,459.24, 6,690.78 and 2,120.91

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Solution

The fourth proportional to 4,459.24, 6,690.78 and 2,120.91 is: 3,182.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,459.24 : 6,690.78 = 2,120.91 : x
  2. Step 2: Convert to fraction form
    4,459.24/6,690.78 = 2,120.91/x
  3. Step 3: Cross multiply
    4,459.24x = 6,690.78 × 2,120.91
  4. Step 4: Simplify right side
    4,459.24x = 14,190,542.21
  5. Step 5: Solve for x
    x = 14,190,542.21/4,459.24
  6. Step 6: Final answer
    x = 3,182.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.