Home / 5,075.78-7,614.14-1,378.02

Finding the Fourth Proportional to 5,075.78, 7,614.14 and 1,378.02

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Solution

The fourth proportional to 5,075.78, 7,614.14 and 1,378.02 is: 2,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.78 : 7,614.14 = 1,378.02 : x
  2. Step 2: Convert to fraction form
    5,075.78/7,614.14 = 1,378.02/x
  3. Step 3: Cross multiply
    5,075.78x = 7,614.14 × 1,378.02
  4. Step 4: Simplify right side
    5,075.78x = 10,492,437.20
  5. Step 5: Solve for x
    x = 10,492,437.20/5,075.78
  6. Step 6: Final answer
    x = 2,067.16

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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.