Home / 9,415.80-12,993.81-5,224.05

Finding the Fourth Proportional to 9,415.80, 12,993.81 and 5,224.05

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Solution

The fourth proportional to 9,415.80, 12,993.81 and 5,224.05 is: 7,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.80 : 12,993.81 = 5,224.05 : x
  2. Step 2: Convert to fraction form
    9,415.80/12,993.81 = 5,224.05/x
  3. Step 3: Cross multiply
    9,415.80x = 12,993.81 × 5,224.05
  4. Step 4: Simplify right side
    9,415.80x = 67,880,313.13
  5. Step 5: Solve for x
    x = 67,880,313.13/9,415.80
  6. Step 6: Final answer
    x = 7,209.19

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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.