Home / 3,558.94-4,911.64-1,987.34

Finding the Fourth Proportional to 3,558.94, 4,911.64 and 1,987.34

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Solution

The fourth proportional to 3,558.94, 4,911.64 and 1,987.34 is: 2,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.94 : 4,911.64 = 1,987.34 : x
  2. Step 2: Convert to fraction form
    3,558.94/4,911.64 = 1,987.34/x
  3. Step 3: Cross multiply
    3,558.94x = 4,911.64 × 1,987.34
  4. Step 4: Simplify right side
    3,558.94x = 9,761,069.11
  5. Step 5: Solve for x
    x = 9,761,069.11/3,558.94
  6. Step 6: Final answer
    x = 2,742.69

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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.