Home / 3,416.30-5,120.69-3,139.51

Finding the Fourth Proportional to 3,416.30, 5,120.69 and 3,139.51

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Solution

The fourth proportional to 3,416.30, 5,120.69 and 3,139.51 is: 4,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416.30 : 5,120.69 = 3,139.51 : x
  2. Step 2: Convert to fraction form
    3,416.30/5,120.69 = 3,139.51/x
  3. Step 3: Cross multiply
    3,416.30x = 5,120.69 × 3,139.51
  4. Step 4: Simplify right side
    3,416.30x = 16,076,457.46
  5. Step 5: Solve for x
    x = 16,076,457.46/3,416.30
  6. Step 6: Final answer
    x = 4,705.81

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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.