Home / 7,919.64-10,929.33-4,382.78

Finding the Fourth Proportional to 7,919.64, 10,929.33 and 4,382.78

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Solution

The fourth proportional to 7,919.64, 10,929.33 and 4,382.78 is: 6,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.64 : 10,929.33 = 4,382.78 : x
  2. Step 2: Convert to fraction form
    7,919.64/10,929.33 = 4,382.78/x
  3. Step 3: Cross multiply
    7,919.64x = 10,929.33 × 4,382.78
  4. Step 4: Simplify right side
    7,919.64x = 47,900,794.29
  5. Step 5: Solve for x
    x = 47,900,794.29/7,919.64
  6. Step 6: Final answer
    x = 6,048.36

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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.