Home / 7,749.18-10,686.51-5,231.70

Finding the Fourth Proportional to 7,749.18, 10,686.51 and 5,231.70

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Solution

The fourth proportional to 7,749.18, 10,686.51 and 5,231.70 is: 7,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.18 : 10,686.51 = 5,231.70 : x
  2. Step 2: Convert to fraction form
    7,749.18/10,686.51 = 5,231.70/x
  3. Step 3: Cross multiply
    7,749.18x = 10,686.51 × 5,231.70
  4. Step 4: Simplify right side
    7,749.18x = 55,908,614.37
  5. Step 5: Solve for x
    x = 55,908,614.37/7,749.18
  6. Step 6: Final answer
    x = 7,214.78

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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.