Home / 3,159.48-4,739.39-1,211.53

Finding the Fourth Proportional to 3,159.48, 4,739.39 and 1,211.53

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Solution

The fourth proportional to 3,159.48, 4,739.39 and 1,211.53 is: 1,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.48 : 4,739.39 = 1,211.53 : x
  2. Step 2: Convert to fraction form
    3,159.48/4,739.39 = 1,211.53/x
  3. Step 3: Cross multiply
    3,159.48x = 4,739.39 × 1,211.53
  4. Step 4: Simplify right side
    3,159.48x = 5,741,913.17
  5. Step 5: Solve for x
    x = 5,741,913.17/3,159.48
  6. Step 6: Final answer
    x = 1,817.36

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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.