Home / 3,215.86-4,820.07-1,480.84

Finding the Fourth Proportional to 3,215.86, 4,820.07 and 1,480.84

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Solution

The fourth proportional to 3,215.86, 4,820.07 and 1,480.84 is: 2,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.86 : 4,820.07 = 1,480.84 : x
  2. Step 2: Convert to fraction form
    3,215.86/4,820.07 = 1,480.84/x
  3. Step 3: Cross multiply
    3,215.86x = 4,820.07 × 1,480.84
  4. Step 4: Simplify right side
    3,215.86x = 7,137,752.46
  5. Step 5: Solve for x
    x = 7,137,752.46/3,215.86
  6. Step 6: Final answer
    x = 2,219.55

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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.