Home / 9,119.90-12,584.58-5,140.64

Finding the Fourth Proportional to 9,119.90, 12,584.58 and 5,140.64

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Solution

The fourth proportional to 9,119.90, 12,584.58 and 5,140.64 is: 7,093.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.90 : 12,584.58 = 5,140.64 : x
  2. Step 2: Convert to fraction form
    9,119.90/12,584.58 = 5,140.64/x
  3. Step 3: Cross multiply
    9,119.90x = 12,584.58 × 5,140.64
  4. Step 4: Simplify right side
    9,119.90x = 64,692,795.33
  5. Step 5: Solve for x
    x = 64,692,795.33/9,119.90
  6. Step 6: Final answer
    x = 7,093.59

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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.