Home / 2,143.01-3,214.47-1,271.49

Finding the Fourth Proportional to 2,143.01, 3,214.47 and 1,271.49

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Solution

The fourth proportional to 2,143.01, 3,214.47 and 1,271.49 is: 1,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.01 : 3,214.47 = 1,271.49 : x
  2. Step 2: Convert to fraction form
    2,143.01/3,214.47 = 1,271.49/x
  3. Step 3: Cross multiply
    2,143.01x = 3,214.47 × 1,271.49
  4. Step 4: Simplify right side
    2,143.01x = 4,087,166.46
  5. Step 5: Solve for x
    x = 4,087,166.46/2,143.01
  6. Step 6: Final answer
    x = 1,907.21

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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.