Home / 9,114.80-12,576.84-5,135.60

Finding the Fourth Proportional to 9,114.80, 12,576.84 and 5,135.60

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Solution

The fourth proportional to 9,114.80, 12,576.84 and 5,135.60 is: 7,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.80 : 12,576.84 = 5,135.60 : x
  2. Step 2: Convert to fraction form
    9,114.80/12,576.84 = 5,135.60/x
  3. Step 3: Cross multiply
    9,114.80x = 12,576.84 × 5,135.60
  4. Step 4: Simplify right side
    9,114.80x = 64,589,619.50
  5. Step 5: Solve for x
    x = 64,589,619.50/9,114.80
  6. Step 6: Final answer
    x = 7,086.24

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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.