Home / 7,327.89-10,112.47-3,970.79

Finding the Fourth Proportional to 7,327.89, 10,112.47 and 3,970.79

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Solution

The fourth proportional to 7,327.89, 10,112.47 and 3,970.79 is: 5,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,327.89 : 10,112.47 = 3,970.79 : x
  2. Step 2: Convert to fraction form
    7,327.89/10,112.47 = 3,970.79/x
  3. Step 3: Cross multiply
    7,327.89x = 10,112.47 × 3,970.79
  4. Step 4: Simplify right side
    7,327.89x = 40,154,444.19
  5. Step 5: Solve for x
    x = 40,154,444.19/7,327.89
  6. Step 6: Final answer
    x = 5,479.67

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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.