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Finding the Fourth Proportional to 3,555, 4,907.34 and 2,316.60

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Solution

The fourth proportional to 3,555, 4,907.34 and 2,316.60 is: 3,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555 : 4,907.34 = 2,316.60 : x
  2. Step 2: Convert to fraction form
    3,555/4,907.34 = 2,316.60/x
  3. Step 3: Cross multiply
    3,555x = 4,907.34 × 2,316.60
  4. Step 4: Simplify right side
    3,555x = 11,368,343.84
  5. Step 5: Solve for x
    x = 11,368,343.84/3,555
  6. Step 6: Final answer
    x = 3,197.85

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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.