Home / 3,113.08-4,668.20-921.04

Finding the Fourth Proportional to 3,113.08, 4,668.20 and 921.04

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Solution

The fourth proportional to 3,113.08, 4,668.20 and 921.04 is: 1,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.08 : 4,668.20 = 921.04 : x
  2. Step 2: Convert to fraction form
    3,113.08/4,668.20 = 921.04/x
  3. Step 3: Cross multiply
    3,113.08x = 4,668.20 × 921.04
  4. Step 4: Simplify right side
    3,113.08x = 4,299,598.93
  5. Step 5: Solve for x
    x = 4,299,598.93/3,113.08
  6. Step 6: Final answer
    x = 1,381.14

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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.