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Finding the Fourth Proportional to 4,860.71, 7,289.28 and 1,739.87

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Solution

The fourth proportional to 4,860.71, 7,289.28 and 1,739.87 is: 2,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860.71 : 7,289.28 = 1,739.87 : x
  2. Step 2: Convert to fraction form
    4,860.71/7,289.28 = 1,739.87/x
  3. Step 3: Cross multiply
    4,860.71x = 7,289.28 × 1,739.87
  4. Step 4: Simplify right side
    4,860.71x = 12,682,417.82
  5. Step 5: Solve for x
    x = 12,682,417.82/4,860.71
  6. Step 6: Final answer
    x = 2,609.17

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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.