Home / 3,159.90-4,740.51-1,212.09

Finding the Fourth Proportional to 3,159.90, 4,740.51 and 1,212.09

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Solution

The fourth proportional to 3,159.90, 4,740.51 and 1,212.09 is: 1,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.90 : 4,740.51 = 1,212.09 : x
  2. Step 2: Convert to fraction form
    3,159.90/4,740.51 = 1,212.09/x
  3. Step 3: Cross multiply
    3,159.90x = 4,740.51 × 1,212.09
  4. Step 4: Simplify right side
    3,159.90x = 5,745,924.77
  5. Step 5: Solve for x
    x = 5,745,924.77/3,159.90
  6. Step 6: Final answer
    x = 1,818.39

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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.