Home / 9,378.24-12,944.12-5,401.64

Finding the Fourth Proportional to 9,378.24, 12,944.12 and 5,401.64

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Solution

The fourth proportional to 9,378.24, 12,944.12 and 5,401.64 is: 7,455.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.24 : 12,944.12 = 5,401.64 : x
  2. Step 2: Convert to fraction form
    9,378.24/12,944.12 = 5,401.64/x
  3. Step 3: Cross multiply
    9,378.24x = 12,944.12 × 5,401.64
  4. Step 4: Simplify right side
    9,378.24x = 69,919,476.36
  5. Step 5: Solve for x
    x = 69,919,476.36/9,378.24
  6. Step 6: Final answer
    x = 7,455.50

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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.