Home / 6,721.12-10,078.88-3,210.56

Finding the Fourth Proportional to 6,721.12, 10,078.88 and 3,210.56

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Solution

The fourth proportional to 6,721.12, 10,078.88 and 3,210.56 is: 4,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.12 : 10,078.88 = 3,210.56 : x
  2. Step 2: Convert to fraction form
    6,721.12/10,078.88 = 3,210.56/x
  3. Step 3: Cross multiply
    6,721.12x = 10,078.88 × 3,210.56
  4. Step 4: Simplify right side
    6,721.12x = 32,358,848.97
  5. Step 5: Solve for x
    x = 32,358,848.97/6,721.12
  6. Step 6: Final answer
    x = 4,814.50

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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.