Home / 7,795.55-10,749.68-5,139.56

Finding the Fourth Proportional to 7,795.55, 10,749.68 and 5,139.56

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Solution

The fourth proportional to 7,795.55, 10,749.68 and 5,139.56 is: 7,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,795.55 : 10,749.68 = 5,139.56 : x
  2. Step 2: Convert to fraction form
    7,795.55/10,749.68 = 5,139.56/x
  3. Step 3: Cross multiply
    7,795.55x = 10,749.68 × 5,139.56
  4. Step 4: Simplify right side
    7,795.55x = 55,248,645.79
  5. Step 5: Solve for x
    x = 55,248,645.79/7,795.55
  6. Step 6: Final answer
    x = 7,087.20

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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.