Home / 9,415.35-12,993.18-5,223.60

Finding the Fourth Proportional to 9,415.35, 12,993.18 and 5,223.60

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Solution

The fourth proportional to 9,415.35, 12,993.18 and 5,223.60 is: 7,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.35 : 12,993.18 = 5,223.60 : x
  2. Step 2: Convert to fraction form
    9,415.35/12,993.18 = 5,223.60/x
  3. Step 3: Cross multiply
    9,415.35x = 12,993.18 × 5,223.60
  4. Step 4: Simplify right side
    9,415.35x = 67,871,175.05
  5. Step 5: Solve for x
    x = 67,871,175.05/9,415.35
  6. Step 6: Final answer
    x = 7,208.57

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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.