Home / 3,154.36-4,731.42-1,305

Finding the Fourth Proportional to 3,154.36, 4,731.42 and 1,305

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Solution

The fourth proportional to 3,154.36, 4,731.42 and 1,305 is: 1,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.36 : 4,731.42 = 1,305 : x
  2. Step 2: Convert to fraction form
    3,154.36/4,731.42 = 1,305/x
  3. Step 3: Cross multiply
    3,154.36x = 4,731.42 × 1,305
  4. Step 4: Simplify right side
    3,154.36x = 6,174,503.10
  5. Step 5: Solve for x
    x = 6,174,503.10/3,154.36
  6. Step 6: Final answer
    x = 1,957.45

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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.