Home / 2,976.63-4,465.95-1,128.25

Finding the Fourth Proportional to 2,976.63, 4,465.95 and 1,128.25

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Solution

The fourth proportional to 2,976.63, 4,465.95 and 1,128.25 is: 1,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.63 : 4,465.95 = 1,128.25 : x
  2. Step 2: Convert to fraction form
    2,976.63/4,465.95 = 1,128.25/x
  3. Step 3: Cross multiply
    2,976.63x = 4,465.95 × 1,128.25
  4. Step 4: Simplify right side
    2,976.63x = 5,038,708.09
  5. Step 5: Solve for x
    x = 5,038,708.09/2,976.63
  6. Step 6: Final answer
    x = 1,692.76

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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.