Home / 7,945.84-10,971.54-6,451.39

Finding the Fourth Proportional to 7,945.84, 10,971.54 and 6,451.39

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Solution

The fourth proportional to 7,945.84, 10,971.54 and 6,451.39 is: 8,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.84 : 10,971.54 = 6,451.39 : x
  2. Step 2: Convert to fraction form
    7,945.84/10,971.54 = 6,451.39/x
  3. Step 3: Cross multiply
    7,945.84x = 10,971.54 × 6,451.39
  4. Step 4: Simplify right side
    7,945.84x = 70,781,683.44
  5. Step 5: Solve for x
    x = 70,781,683.44/7,945.84
  6. Step 6: Final answer
    x = 8,908.02

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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.