Home / 1,577.93-2,179.60-1,280.28

Finding the Fourth Proportional to 1,577.93, 2,179.60 and 1,280.28

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Solution

The fourth proportional to 1,577.93, 2,179.60 and 1,280.28 is: 1,768.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.93 : 2,179.60 = 1,280.28 : x
  2. Step 2: Convert to fraction form
    1,577.93/2,179.60 = 1,280.28/x
  3. Step 3: Cross multiply
    1,577.93x = 2,179.60 × 1,280.28
  4. Step 4: Simplify right side
    1,577.93x = 2,790,503.26
  5. Step 5: Solve for x
    x = 2,790,503.26/1,577.93
  6. Step 6: Final answer
    x = 1,768.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.