Home / 4,192.78-6,290.08-1,271.31

Finding the Fourth Proportional to 4,192.78, 6,290.08 and 1,271.31

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Solution

The fourth proportional to 4,192.78, 6,290.08 and 1,271.31 is: 1,907.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,192.78 : 6,290.08 = 1,271.31 : x
  2. Step 2: Convert to fraction form
    4,192.78/6,290.08 = 1,271.31/x
  3. Step 3: Cross multiply
    4,192.78x = 6,290.08 × 1,271.31
  4. Step 4: Simplify right side
    4,192.78x = 7,996,603.80
  5. Step 5: Solve for x
    x = 7,996,603.80/4,192.78
  6. Step 6: Final answer
    x = 1,907.23

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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.