Home / 7,117.52-9,821.86-3,973.64

Finding the Fourth Proportional to 7,117.52, 9,821.86 and 3,973.64

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Solution

The fourth proportional to 7,117.52, 9,821.86 and 3,973.64 is: 5,483.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.52 : 9,821.86 = 3,973.64 : x
  2. Step 2: Convert to fraction form
    7,117.52/9,821.86 = 3,973.64/x
  3. Step 3: Cross multiply
    7,117.52x = 9,821.86 × 3,973.64
  4. Step 4: Simplify right side
    7,117.52x = 39,028,476.73
  5. Step 5: Solve for x
    x = 39,028,476.73/7,117.52
  6. Step 6: Final answer
    x = 5,483.44

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1.5x scale

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.