Home / 7,973.76-11,005.68-4,989.60

Finding the Fourth Proportional to 7,973.76, 11,005.68 and 4,989.60

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Solution

The fourth proportional to 7,973.76, 11,005.68 and 4,989.60 is: 6,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,973.76 : 11,005.68 = 4,989.60 : x
  2. Step 2: Convert to fraction form
    7,973.76/11,005.68 = 4,989.60/x
  3. Step 3: Cross multiply
    7,973.76x = 11,005.68 × 4,989.60
  4. Step 4: Simplify right side
    7,973.76x = 54,913,940.93
  5. Step 5: Solve for x
    x = 54,913,940.93/7,973.76
  6. Step 6: Final answer
    x = 6,886.83

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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.