Home / 3,271.40-4,907.10-1,809.80

Finding the Fourth Proportional to 3,271.40, 4,907.10 and 1,809.80

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Solution

The fourth proportional to 3,271.40, 4,907.10 and 1,809.80 is: 2,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.40 : 4,907.10 = 1,809.80 : x
  2. Step 2: Convert to fraction form
    3,271.40/4,907.10 = 1,809.80/x
  3. Step 3: Cross multiply
    3,271.40x = 4,907.10 × 1,809.80
  4. Step 4: Simplify right side
    3,271.40x = 8,880,869.58
  5. Step 5: Solve for x
    x = 8,880,869.58/3,271.40
  6. Step 6: Final answer
    x = 2,714.70

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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.