Home / 5,276.24-7,915.93-1,989.87

Finding the Fourth Proportional to 5,276.24, 7,915.93 and 1,989.87

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Solution

The fourth proportional to 5,276.24, 7,915.93 and 1,989.87 is: 2,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.24 : 7,915.93 = 1,989.87 : x
  2. Step 2: Convert to fraction form
    5,276.24/7,915.93 = 1,989.87/x
  3. Step 3: Cross multiply
    5,276.24x = 7,915.93 × 1,989.87
  4. Step 4: Simplify right side
    5,276.24x = 15,751,636.97
  5. Step 5: Solve for x
    x = 15,751,636.97/5,276.24
  6. Step 6: Final answer
    x = 2,985.39

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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.