Home / 3,075.29-4,243.91-1,678.04

Finding the Fourth Proportional to 3,075.29, 4,243.91 and 1,678.04

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Solution

The fourth proportional to 3,075.29, 4,243.91 and 1,678.04 is: 2,315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.29 : 4,243.91 = 1,678.04 : x
  2. Step 2: Convert to fraction form
    3,075.29/4,243.91 = 1,678.04/x
  3. Step 3: Cross multiply
    3,075.29x = 4,243.91 × 1,678.04
  4. Step 4: Simplify right side
    3,075.29x = 7,121,421.13
  5. Step 5: Solve for x
    x = 7,121,421.13/3,075.29
  6. Step 6: Final answer
    x = 2,315.69

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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.