Home / 7,215.08-10,821.40-2,019.76

Finding the Fourth Proportional to 7,215.08, 10,821.40 and 2,019.76

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Solution

The fourth proportional to 7,215.08, 10,821.40 and 2,019.76 is: 3,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.08 : 10,821.40 = 2,019.76 : x
  2. Step 2: Convert to fraction form
    7,215.08/10,821.40 = 2,019.76/x
  3. Step 3: Cross multiply
    7,215.08x = 10,821.40 × 2,019.76
  4. Step 4: Simplify right side
    7,215.08x = 21,856,630.86
  5. Step 5: Solve for x
    x = 21,856,630.86/7,215.08
  6. Step 6: Final answer
    x = 3,029.30

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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.