Home / 2,811.47-4,210.63-2,222.51

Finding the Fourth Proportional to 2,811.47, 4,210.63 and 2,222.51

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Solution

The fourth proportional to 2,811.47, 4,210.63 and 2,222.51 is: 3,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.47 : 4,210.63 = 2,222.51 : x
  2. Step 2: Convert to fraction form
    2,811.47/4,210.63 = 2,222.51/x
  3. Step 3: Cross multiply
    2,811.47x = 4,210.63 × 2,222.51
  4. Step 4: Simplify right side
    2,811.47x = 9,358,188.70
  5. Step 5: Solve for x
    x = 9,358,188.70/2,811.47
  6. Step 6: Final answer
    x = 3,328.58

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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.