Home / 3,075.16-4,242.36-1,815.88

Finding the Fourth Proportional to 3,075.16, 4,242.36 and 1,815.88

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Solution

The fourth proportional to 3,075.16, 4,242.36 and 1,815.88 is: 2,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.16 : 4,242.36 = 1,815.88 : x
  2. Step 2: Convert to fraction form
    3,075.16/4,242.36 = 1,815.88/x
  3. Step 3: Cross multiply
    3,075.16x = 4,242.36 × 1,815.88
  4. Step 4: Simplify right side
    3,075.16x = 7,703,616.68
  5. Step 5: Solve for x
    x = 7,703,616.68/3,075.16
  6. Step 6: Final answer
    x = 2,505.11

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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.