Home / 1,395.52-2,081.10-1,222.99

Finding the Fourth Proportional to 1,395.52, 2,081.10 and 1,222.99

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Solution

The fourth proportional to 1,395.52, 2,081.10 and 1,222.99 is: 1,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.52 : 2,081.10 = 1,222.99 : x
  2. Step 2: Convert to fraction form
    1,395.52/2,081.10 = 1,222.99/x
  3. Step 3: Cross multiply
    1,395.52x = 2,081.10 × 1,222.99
  4. Step 4: Simplify right side
    1,395.52x = 2,545,164.49
  5. Step 5: Solve for x
    x = 2,545,164.49/1,395.52
  6. Step 6: Final answer
    x = 1,823.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.