Home / 3,421.04-5,130.46-1,112

Finding the Fourth Proportional to 3,421.04, 5,130.46 and 1,112

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Solution

The fourth proportional to 3,421.04, 5,130.46 and 1,112 is: 1,667.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.04 : 5,130.46 = 1,112 : x
  2. Step 2: Convert to fraction form
    3,421.04/5,130.46 = 1,112/x
  3. Step 3: Cross multiply
    3,421.04x = 5,130.46 × 1,112
  4. Step 4: Simplify right side
    3,421.04x = 5,705,071.52
  5. Step 5: Solve for x
    x = 5,705,071.52/3,421.04
  6. Step 6: Final answer
    x = 1,667.64

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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.