Home / 3,558.96-4,911.36-1,987.05

Finding the Fourth Proportional to 3,558.96, 4,911.36 and 1,987.05

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Solution

The fourth proportional to 3,558.96, 4,911.36 and 1,987.05 is: 2,742.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.96 : 4,911.36 = 1,987.05 : x
  2. Step 2: Convert to fraction form
    3,558.96/4,911.36 = 1,987.05/x
  3. Step 3: Cross multiply
    3,558.96x = 4,911.36 × 1,987.05
  4. Step 4: Simplify right side
    3,558.96x = 9,759,131.48
  5. Step 5: Solve for x
    x = 9,759,131.48/3,558.96
  6. Step 6: Final answer
    x = 2,742.13

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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.