Home / 3,558.36-4,909.95-1,986.45

Finding the Fourth Proportional to 3,558.36, 4,909.95 and 1,986.45

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Solution

The fourth proportional to 3,558.36, 4,909.95 and 1,986.45 is: 2,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.36 : 4,909.95 = 1,986.45 : x
  2. Step 2: Convert to fraction form
    3,558.36/4,909.95 = 1,986.45/x
  3. Step 3: Cross multiply
    3,558.36x = 4,909.95 × 1,986.45
  4. Step 4: Simplify right side
    3,558.36x = 9,753,370.18
  5. Step 5: Solve for x
    x = 9,753,370.18/3,558.36
  6. Step 6: Final answer
    x = 2,740.97

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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.