Home / 2,121.58-3,184.40-1,301.46

Finding the Fourth Proportional to 2,121.58, 3,184.40 and 1,301.46

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Solution

The fourth proportional to 2,121.58, 3,184.40 and 1,301.46 is: 1,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.58 : 3,184.40 = 1,301.46 : x
  2. Step 2: Convert to fraction form
    2,121.58/3,184.40 = 1,301.46/x
  3. Step 3: Cross multiply
    2,121.58x = 3,184.40 × 1,301.46
  4. Step 4: Simplify right side
    2,121.58x = 4,144,369.22
  5. Step 5: Solve for x
    x = 4,144,369.22/2,121.58
  6. Step 6: Final answer
    x = 1,953.44

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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.