Home / 7,913.76-10,921.74-4,378.14

Finding the Fourth Proportional to 7,913.76, 10,921.74 and 4,378.14

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Solution

The fourth proportional to 7,913.76, 10,921.74 and 4,378.14 is: 6,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.76 : 10,921.74 = 4,378.14 : x
  2. Step 2: Convert to fraction form
    7,913.76/10,921.74 = 4,378.14/x
  3. Step 3: Cross multiply
    7,913.76x = 10,921.74 × 4,378.14
  4. Step 4: Simplify right side
    7,913.76x = 47,816,906.76
  5. Step 5: Solve for x
    x = 47,816,906.76/7,913.76
  6. Step 6: Final answer
    x = 6,042.25

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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.