Home / 9,111.20-13,661.64-3,558.20

Finding the Fourth Proportional to 9,111.20, 13,661.64 and 3,558.20

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Solution

The fourth proportional to 9,111.20, 13,661.64 and 3,558.20 is: 5,335.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.20 : 13,661.64 = 3,558.20 : x
  2. Step 2: Convert to fraction form
    9,111.20/13,661.64 = 3,558.20/x
  3. Step 3: Cross multiply
    9,111.20x = 13,661.64 × 3,558.20
  4. Step 4: Simplify right side
    9,111.20x = 48,610,779.14
  5. Step 5: Solve for x
    x = 48,610,779.14/9,111.20
  6. Step 6: Final answer
    x = 5,335.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.