Home / 2,186.45-3,280.13-1,210.50

Finding the Fourth Proportional to 2,186.45, 3,280.13 and 1,210.50

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Solution

The fourth proportional to 2,186.45, 3,280.13 and 1,210.50 is: 1,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.45 : 3,280.13 = 1,210.50 : x
  2. Step 2: Convert to fraction form
    2,186.45/3,280.13 = 1,210.50/x
  3. Step 3: Cross multiply
    2,186.45x = 3,280.13 × 1,210.50
  4. Step 4: Simplify right side
    2,186.45x = 3,970,610.42
  5. Step 5: Solve for x
    x = 3,970,610.42/2,186.45
  6. Step 6: Final answer
    x = 1,816.01

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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.