Home / 2,976.95-4,465.54-1,128.20

Finding the Fourth Proportional to 2,976.95, 4,465.54 and 1,128.20

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Solution

The fourth proportional to 2,976.95, 4,465.54 and 1,128.20 is: 1,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.95 : 4,465.54 = 1,128.20 : x
  2. Step 2: Convert to fraction form
    2,976.95/4,465.54 = 1,128.20/x
  3. Step 3: Cross multiply
    2,976.95x = 4,465.54 × 1,128.20
  4. Step 4: Simplify right side
    2,976.95x = 5,038,022.23
  5. Step 5: Solve for x
    x = 5,038,022.23/2,976.95
  6. Step 6: Final answer
    x = 1,692.34

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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.