Home / 3,611.34-5,412.87-1,638.47

Finding the Fourth Proportional to 3,611.34, 5,412.87 and 1,638.47

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Solution

The fourth proportional to 3,611.34, 5,412.87 and 1,638.47 is: 2,455.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.34 : 5,412.87 = 1,638.47 : x
  2. Step 2: Convert to fraction form
    3,611.34/5,412.87 = 1,638.47/x
  3. Step 3: Cross multiply
    3,611.34x = 5,412.87 × 1,638.47
  4. Step 4: Simplify right side
    3,611.34x = 8,868,798.04
  5. Step 5: Solve for x
    x = 8,868,798.04/3,611.34
  6. Step 6: Final answer
    x = 2,455.82

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1.5x scale

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.