Home / 10,145.36-15,215.16-3,219.68

Finding the Fourth Proportional to 10,145.36, 15,215.16 and 3,219.68

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Solution

The fourth proportional to 10,145.36, 15,215.16 and 3,219.68 is: 4,828.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.36 : 15,215.16 = 3,219.68 : x
  2. Step 2: Convert to fraction form
    10,145.36/15,215.16 = 3,219.68/x
  3. Step 3: Cross multiply
    10,145.36x = 15,215.16 × 3,219.68
  4. Step 4: Simplify right side
    10,145.36x = 48,987,946.35
  5. Step 5: Solve for x
    x = 48,987,946.35/10,145.36
  6. Step 6: Final answer
    x = 4,828.61

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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.