Home / 3,113.02-4,668.81-921.22

Finding the Fourth Proportional to 3,113.02, 4,668.81 and 921.22

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Solution

The fourth proportional to 3,113.02, 4,668.81 and 921.22 is: 1,381.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.02 : 4,668.81 = 921.22 : x
  2. Step 2: Convert to fraction form
    3,113.02/4,668.81 = 921.22/x
  3. Step 3: Cross multiply
    3,113.02x = 4,668.81 × 921.22
  4. Step 4: Simplify right side
    3,113.02x = 4,301,001.15
  5. Step 5: Solve for x
    x = 4,301,001.15/3,113.02
  6. Step 6: Final answer
    x = 1,381.62

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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.