Home / 3,112.04-4,667.20-921.04

Finding the Fourth Proportional to 3,112.04, 4,667.20 and 921.04

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Solution

The fourth proportional to 3,112.04, 4,667.20 and 921.04 is: 1,381.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.04 : 4,667.20 = 921.04 : x
  2. Step 2: Convert to fraction form
    3,112.04/4,667.20 = 921.04/x
  3. Step 3: Cross multiply
    3,112.04x = 4,667.20 × 921.04
  4. Step 4: Simplify right side
    3,112.04x = 4,298,677.89
  5. Step 5: Solve for x
    x = 4,298,677.89/3,112.04
  6. Step 6: Final answer
    x = 1,381.31

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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.