Home / 7,447.89-10,278.21-4,091.01

Finding the Fourth Proportional to 7,447.89, 10,278.21 and 4,091.01

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Solution

The fourth proportional to 7,447.89, 10,278.21 and 4,091.01 is: 5,645.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.89 : 10,278.21 = 4,091.01 : x
  2. Step 2: Convert to fraction form
    7,447.89/10,278.21 = 4,091.01/x
  3. Step 3: Cross multiply
    7,447.89x = 10,278.21 × 4,091.01
  4. Step 4: Simplify right side
    7,447.89x = 42,048,308.66
  5. Step 5: Solve for x
    x = 42,048,308.66/7,447.89
  6. Step 6: Final answer
    x = 5,645.67

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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.