Home / 5,148.47-7,721.42-1,985.27

Finding the Fourth Proportional to 5,148.47, 7,721.42 and 1,985.27

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Solution

The fourth proportional to 5,148.47, 7,721.42 and 1,985.27 is: 2,977.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.47 : 7,721.42 = 1,985.27 : x
  2. Step 2: Convert to fraction form
    5,148.47/7,721.42 = 1,985.27/x
  3. Step 3: Cross multiply
    5,148.47x = 7,721.42 × 1,985.27
  4. Step 4: Simplify right side
    5,148.47x = 15,329,103.48
  5. Step 5: Solve for x
    x = 15,329,103.48/5,148.47
  6. Step 6: Final answer
    x = 2,977.41

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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.