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Finding the Fourth Proportional to 3,559.61, 4,907.69 and 2,919.20

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Solution

The fourth proportional to 3,559.61, 4,907.69 and 2,919.20 is: 4,024.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.61 : 4,907.69 = 2,919.20 : x
  2. Step 2: Convert to fraction form
    3,559.61/4,907.69 = 2,919.20/x
  3. Step 3: Cross multiply
    3,559.61x = 4,907.69 × 2,919.20
  4. Step 4: Simplify right side
    3,559.61x = 14,326,534.97
  5. Step 5: Solve for x
    x = 14,326,534.97/3,559.61
  6. Step 6: Final answer
    x = 4,024.75

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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.