Home / 7,327.92-10,112.56-3,970.74

Finding the Fourth Proportional to 7,327.92, 10,112.56 and 3,970.74

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Solution

The fourth proportional to 7,327.92, 10,112.56 and 3,970.74 is: 5,479.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,327.92 : 10,112.56 = 3,970.74 : x
  2. Step 2: Convert to fraction form
    7,327.92/10,112.56 = 3,970.74/x
  3. Step 3: Cross multiply
    7,327.92x = 10,112.56 × 3,970.74
  4. Step 4: Simplify right side
    7,327.92x = 40,154,346.49
  5. Step 5: Solve for x
    x = 40,154,346.49/7,327.92
  6. Step 6: Final answer
    x = 5,479.64

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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.