Home / 9,378.24-12,941-5,398.56

Finding the Fourth Proportional to 9,378.24, 12,941 and 5,398.56

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Solution

The fourth proportional to 9,378.24, 12,941 and 5,398.56 is: 7,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378.24 : 12,941 = 5,398.56 : x
  2. Step 2: Convert to fraction form
    9,378.24/12,941 = 5,398.56/x
  3. Step 3: Cross multiply
    9,378.24x = 12,941 × 5,398.56
  4. Step 4: Simplify right side
    9,378.24x = 69,862,764.96
  5. Step 5: Solve for x
    x = 69,862,764.96/9,378.24
  6. Step 6: Final answer
    x = 7,449.45

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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.