Home / 5,128.36-7,686.15-2,203.27

Finding the Fourth Proportional to 5,128.36, 7,686.15 and 2,203.27

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Solution

The fourth proportional to 5,128.36, 7,686.15 and 2,203.27 is: 3,302.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.36 : 7,686.15 = 2,203.27 : x
  2. Step 2: Convert to fraction form
    5,128.36/7,686.15 = 2,203.27/x
  3. Step 3: Cross multiply
    5,128.36x = 7,686.15 × 2,203.27
  4. Step 4: Simplify right side
    5,128.36x = 16,934,663.71
  5. Step 5: Solve for x
    x = 16,934,663.71/5,128.36
  6. Step 6: Final answer
    x = 3,302.16

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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.