Home / 2,883.77-3,979.60-1,557.47

Finding the Fourth Proportional to 2,883.77, 3,979.60 and 1,557.47

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Solution

The fourth proportional to 2,883.77, 3,979.60 and 1,557.47 is: 2,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,883.77 : 3,979.60 = 1,557.47 : x
  2. Step 2: Convert to fraction form
    2,883.77/3,979.60 = 1,557.47/x
  3. Step 3: Cross multiply
    2,883.77x = 3,979.60 × 1,557.47
  4. Step 4: Simplify right side
    2,883.77x = 6,198,117.56
  5. Step 5: Solve for x
    x = 6,198,117.56/2,883.77
  6. Step 6: Final answer
    x = 2,149.31

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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.