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Finding the Fourth Proportional to 2,884.61, 3,980.77 and 1,558.32

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Solution

The fourth proportional to 2,884.61, 3,980.77 and 1,558.32 is: 2,150.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.61 : 3,980.77 = 1,558.32 : x
  2. Step 2: Convert to fraction form
    2,884.61/3,980.77 = 1,558.32/x
  3. Step 3: Cross multiply
    2,884.61x = 3,980.77 × 1,558.32
  4. Step 4: Simplify right side
    2,884.61x = 6,203,285.81
  5. Step 5: Solve for x
    x = 6,203,285.81/2,884.61
  6. Step 6: Final answer
    x = 2,150.48

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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.