Home / 9,219.40-12,723-5,240.68

Finding the Fourth Proportional to 9,219.40, 12,723 and 5,240.68

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Solution

The fourth proportional to 9,219.40, 12,723 and 5,240.68 is: 7,232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.40 : 12,723 = 5,240.68 : x
  2. Step 2: Convert to fraction form
    9,219.40/12,723 = 5,240.68/x
  3. Step 3: Cross multiply
    9,219.40x = 12,723 × 5,240.68
  4. Step 4: Simplify right side
    9,219.40x = 66,677,171.64
  5. Step 5: Solve for x
    x = 66,677,171.64/9,219.40
  6. Step 6: Final answer
    x = 7,232.27

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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.