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Finding the Fourth Proportional to 4,987.94, 7,483.19 and 1,867.98

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Solution

The fourth proportional to 4,987.94, 7,483.19 and 1,867.98 is: 2,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.94 : 7,483.19 = 1,867.98 : x
  2. Step 2: Convert to fraction form
    4,987.94/7,483.19 = 1,867.98/x
  3. Step 3: Cross multiply
    4,987.94x = 7,483.19 × 1,867.98
  4. Step 4: Simplify right side
    4,987.94x = 13,978,439.92
  5. Step 5: Solve for x
    x = 13,978,439.92/4,987.94
  6. Step 6: Final answer
    x = 2,802.45

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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.