Home / 9,879.87-13,634.43-5,403.54

Finding the Fourth Proportional to 9,879.87, 13,634.43 and 5,403.54

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Solution

The fourth proportional to 9,879.87, 13,634.43 and 5,403.54 is: 7,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.87 : 13,634.43 = 5,403.54 : x
  2. Step 2: Convert to fraction form
    9,879.87/13,634.43 = 5,403.54/x
  3. Step 3: Cross multiply
    9,879.87x = 13,634.43 × 5,403.54
  4. Step 4: Simplify right side
    9,879.87x = 73,674,187.88
  5. Step 5: Solve for x
    x = 73,674,187.88/9,879.87
  6. Step 6: Final answer
    x = 7,457.00

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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.