Home / 7,795.74-10,749.93-5,139.75

Finding the Fourth Proportional to 7,795.74, 10,749.93 and 5,139.75

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Solution

The fourth proportional to 7,795.74, 10,749.93 and 5,139.75 is: 7,087.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,795.74 : 10,749.93 = 5,139.75 : x
  2. Step 2: Convert to fraction form
    7,795.74/10,749.93 = 5,139.75/x
  3. Step 3: Cross multiply
    7,795.74x = 10,749.93 × 5,139.75
  4. Step 4: Simplify right side
    7,795.74x = 55,251,952.72
  5. Step 5: Solve for x
    x = 55,251,952.72/7,795.74
  6. Step 6: Final answer
    x = 7,087.45

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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.