Home / 3,128.77-4,695.47-1,485.33

Finding the Fourth Proportional to 3,128.77, 4,695.47 and 1,485.33

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Solution

The fourth proportional to 3,128.77, 4,695.47 and 1,485.33 is: 2,229.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.77 : 4,695.47 = 1,485.33 : x
  2. Step 2: Convert to fraction form
    3,128.77/4,695.47 = 1,485.33/x
  3. Step 3: Cross multiply
    3,128.77x = 4,695.47 × 1,485.33
  4. Step 4: Simplify right side
    3,128.77x = 6,974,322.46
  5. Step 5: Solve for x
    x = 6,974,322.46/3,128.77
  6. Step 6: Final answer
    x = 2,229.09

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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.