Home / 7,782.13-10,739.37-4,245.40

Finding the Fourth Proportional to 7,782.13, 10,739.37 and 4,245.40

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Solution

The fourth proportional to 7,782.13, 10,739.37 and 4,245.40 is: 5,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.13 : 10,739.37 = 4,245.40 : x
  2. Step 2: Convert to fraction form
    7,782.13/10,739.37 = 4,245.40/x
  3. Step 3: Cross multiply
    7,782.13x = 10,739.37 × 4,245.40
  4. Step 4: Simplify right side
    7,782.13x = 45,592,921.40
  5. Step 5: Solve for x
    x = 45,592,921.40/7,782.13
  6. Step 6: Final answer
    x = 5,858.67

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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.