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Finding the Fourth Proportional to 3,360.88, 4,638.08 and 1,868.80

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Solution

The fourth proportional to 3,360.88, 4,638.08 and 1,868.80 is: 2,578.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.88 : 4,638.08 = 1,868.80 : x
  2. Step 2: Convert to fraction form
    3,360.88/4,638.08 = 1,868.80/x
  3. Step 3: Cross multiply
    3,360.88x = 4,638.08 × 1,868.80
  4. Step 4: Simplify right side
    3,360.88x = 8,667,643.90
  5. Step 5: Solve for x
    x = 8,667,643.90/3,360.88
  6. Step 6: Final answer
    x = 2,578.98

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1.5x scale

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.