Home / 2,079.07-3,118.74-692.35

Finding the Fourth Proportional to 2,079.07, 3,118.74 and 692.35

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Solution

The fourth proportional to 2,079.07, 3,118.74 and 692.35 is: 1,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.07 : 3,118.74 = 692.35 : x
  2. Step 2: Convert to fraction form
    2,079.07/3,118.74 = 692.35/x
  3. Step 3: Cross multiply
    2,079.07x = 3,118.74 × 692.35
  4. Step 4: Simplify right side
    2,079.07x = 2,159,259.64
  5. Step 5: Solve for x
    x = 2,159,259.64/2,079.07
  6. Step 6: Final answer
    x = 1,038.57

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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.