Home / 9,412.08-12,986.88-5,380.19

Finding the Fourth Proportional to 9,412.08, 12,986.88 and 5,380.19

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Solution

The fourth proportional to 9,412.08, 12,986.88 and 5,380.19 is: 7,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,412.08 : 12,986.88 = 5,380.19 : x
  2. Step 2: Convert to fraction form
    9,412.08/12,986.88 = 5,380.19/x
  3. Step 3: Cross multiply
    9,412.08x = 12,986.88 × 5,380.19
  4. Step 4: Simplify right side
    9,412.08x = 69,871,790.07
  5. Step 5: Solve for x
    x = 69,871,790.07/9,412.08
  6. Step 6: Final answer
    x = 7,423.63

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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.