Home / 3,075.26-4,243.74-1,678.01

Finding the Fourth Proportional to 3,075.26, 4,243.74 and 1,678.01

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Solution

The fourth proportional to 3,075.26, 4,243.74 and 1,678.01 is: 2,315.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.26 : 4,243.74 = 1,678.01 : x
  2. Step 2: Convert to fraction form
    3,075.26/4,243.74 = 1,678.01/x
  3. Step 3: Cross multiply
    3,075.26x = 4,243.74 × 1,678.01
  4. Step 4: Simplify right side
    3,075.26x = 7,121,038.16
  5. Step 5: Solve for x
    x = 7,121,038.16/3,075.26
  6. Step 6: Final answer
    x = 2,315.59

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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.