Home / 3,677.60-5,515.86-1,212.32

Finding the Fourth Proportional to 3,677.60, 5,515.86 and 1,212.32

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Solution

The fourth proportional to 3,677.60, 5,515.86 and 1,212.32 is: 1,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.60 : 5,515.86 = 1,212.32 : x
  2. Step 2: Convert to fraction form
    3,677.60/5,515.86 = 1,212.32/x
  3. Step 3: Cross multiply
    3,677.60x = 5,515.86 × 1,212.32
  4. Step 4: Simplify right side
    3,677.60x = 6,686,987.40
  5. Step 5: Solve for x
    x = 6,686,987.40/3,677.60
  6. Step 6: Final answer
    x = 1,818.30

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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.