Home / 9,368.28-12,928-5,119.36

Finding the Fourth Proportional to 9,368.28, 12,928 and 5,119.36

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Solution

The fourth proportional to 9,368.28, 12,928 and 5,119.36 is: 7,064.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.28 : 12,928 = 5,119.36 : x
  2. Step 2: Convert to fraction form
    9,368.28/12,928 = 5,119.36/x
  3. Step 3: Cross multiply
    9,368.28x = 12,928 × 5,119.36
  4. Step 4: Simplify right side
    9,368.28x = 66,183,086.08
  5. Step 5: Solve for x
    x = 66,183,086.08/9,368.28
  6. Step 6: Final answer
    x = 7,064.59

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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.