Home / 5,276.34-7,915.68-1,989.47

Finding the Fourth Proportional to 5,276.34, 7,915.68 and 1,989.47

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Solution

The fourth proportional to 5,276.34, 7,915.68 and 1,989.47 is: 2,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.34 : 7,915.68 = 1,989.47 : x
  2. Step 2: Convert to fraction form
    5,276.34/7,915.68 = 1,989.47/x
  3. Step 3: Cross multiply
    5,276.34x = 7,915.68 × 1,989.47
  4. Step 4: Simplify right side
    5,276.34x = 15,747,968.31
  5. Step 5: Solve for x
    x = 15,747,968.31/5,276.34
  6. Step 6: Final answer
    x = 2,984.64

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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.