Home / 7,117.62-9,821.40-3,973.94

Finding the Fourth Proportional to 7,117.62, 9,821.40 and 3,973.94

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Solution

The fourth proportional to 7,117.62, 9,821.40 and 3,973.94 is: 5,483.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.62 : 9,821.40 = 3,973.94 : x
  2. Step 2: Convert to fraction form
    7,117.62/9,821.40 = 3,973.94/x
  3. Step 3: Cross multiply
    7,117.62x = 9,821.40 × 3,973.94
  4. Step 4: Simplify right side
    7,117.62x = 39,029,654.32
  5. Step 5: Solve for x
    x = 39,029,654.32/7,117.62
  6. Step 6: Final answer
    x = 5,483.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.