Home / 2,884.08-3,980.03-1,557.78

Finding the Fourth Proportional to 2,884.08, 3,980.03 and 1,557.78

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Solution

The fourth proportional to 2,884.08, 3,980.03 and 1,557.78 is: 2,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.08 : 3,980.03 = 1,557.78 : x
  2. Step 2: Convert to fraction form
    2,884.08/3,980.03 = 1,557.78/x
  3. Step 3: Cross multiply
    2,884.08x = 3,980.03 × 1,557.78
  4. Step 4: Simplify right side
    2,884.08x = 6,200,029.95
  5. Step 5: Solve for x
    x = 6,200,029.95/2,884.08
  6. Step 6: Final answer
    x = 2,149.74

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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.