Home / 7,919.21-11,873.05-5,148.65

Finding the Fourth Proportional to 7,919.21, 11,873.05 and 5,148.65

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Solution

The fourth proportional to 7,919.21, 11,873.05 and 5,148.65 is: 7,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.21 : 11,873.05 = 5,148.65 : x
  2. Step 2: Convert to fraction form
    7,919.21/11,873.05 = 5,148.65/x
  3. Step 3: Cross multiply
    7,919.21x = 11,873.05 × 5,148.65
  4. Step 4: Simplify right side
    7,919.21x = 61,130,178.88
  5. Step 5: Solve for x
    x = 61,130,178.88/7,919.21
  6. Step 6: Final answer
    x = 7,719.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.