Home / 2,728.20-4,088.37-1,555.77

Finding the Fourth Proportional to 2,728.20, 4,088.37 and 1,555.77

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Solution

The fourth proportional to 2,728.20, 4,088.37 and 1,555.77 is: 2,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.20 : 4,088.37 = 1,555.77 : x
  2. Step 2: Convert to fraction form
    2,728.20/4,088.37 = 1,555.77/x
  3. Step 3: Cross multiply
    2,728.20x = 4,088.37 × 1,555.77
  4. Step 4: Simplify right side
    2,728.20x = 6,360,563.39
  5. Step 5: Solve for x
    x = 6,360,563.39/2,728.20
  6. Step 6: Final answer
    x = 2,331.41

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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.