Home / 3,075.10-4,243.80-1,730.80

Finding the Fourth Proportional to 3,075.10, 4,243.80 and 1,730.80

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Solution

The fourth proportional to 3,075.10, 4,243.80 and 1,730.80 is: 2,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.10 : 4,243.80 = 1,730.80 : x
  2. Step 2: Convert to fraction form
    3,075.10/4,243.80 = 1,730.80/x
  3. Step 3: Cross multiply
    3,075.10x = 4,243.80 × 1,730.80
  4. Step 4: Simplify right side
    3,075.10x = 7,345,169.04
  5. Step 5: Solve for x
    x = 7,345,169.04/3,075.10
  6. Step 6: Final answer
    x = 2,388.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.