Home / 9,415.55-12,993.47-5,223.80

Finding the Fourth Proportional to 9,415.55, 12,993.47 and 5,223.80

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Solution

The fourth proportional to 9,415.55, 12,993.47 and 5,223.80 is: 7,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.55 : 12,993.47 = 5,223.80 : x
  2. Step 2: Convert to fraction form
    9,415.55/12,993.47 = 5,223.80/x
  3. Step 3: Cross multiply
    9,415.55x = 12,993.47 × 5,223.80
  4. Step 4: Simplify right side
    9,415.55x = 67,875,314.54
  5. Step 5: Solve for x
    x = 67,875,314.54/9,415.55
  6. Step 6: Final answer
    x = 7,208.85

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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.