Home / 7,919.07-11,878.65-2,075.63

Finding the Fourth Proportional to 7,919.07, 11,878.65 and 2,075.63

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Solution

The fourth proportional to 7,919.07, 11,878.65 and 2,075.63 is: 3,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.07 : 11,878.65 = 2,075.63 : x
  2. Step 2: Convert to fraction form
    7,919.07/11,878.65 = 2,075.63/x
  3. Step 3: Cross multiply
    7,919.07x = 11,878.65 × 2,075.63
  4. Step 4: Simplify right side
    7,919.07x = 24,655,622.91
  5. Step 5: Solve for x
    x = 24,655,622.91/7,919.07
  6. Step 6: Final answer
    x = 3,113.45

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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.