Home / 5,259.81-7,258.36-2,991.39

Finding the Fourth Proportional to 5,259.81, 7,258.36 and 2,991.39

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Solution

The fourth proportional to 5,259.81, 7,258.36 and 2,991.39 is: 4,128.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.81 : 7,258.36 = 2,991.39 : x
  2. Step 2: Convert to fraction form
    5,259.81/7,258.36 = 2,991.39/x
  3. Step 3: Cross multiply
    5,259.81x = 7,258.36 × 2,991.39
  4. Step 4: Simplify right side
    5,259.81x = 21,712,585.52
  5. Step 5: Solve for x
    x = 21,712,585.52/5,259.81
  6. Step 6: Final answer
    x = 4,128.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.