Home / 2,075.88-2,864.60-1,289.92

Finding the Fourth Proportional to 2,075.88, 2,864.60 and 1,289.92

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Solution

The fourth proportional to 2,075.88, 2,864.60 and 1,289.92 is: 1,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.88 : 2,864.60 = 1,289.92 : x
  2. Step 2: Convert to fraction form
    2,075.88/2,864.60 = 1,289.92/x
  3. Step 3: Cross multiply
    2,075.88x = 2,864.60 × 1,289.92
  4. Step 4: Simplify right side
    2,075.88x = 3,695,104.83
  5. Step 5: Solve for x
    x = 3,695,104.83/2,075.88
  6. Step 6: Final answer
    x = 1,780.02

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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.