Home / 7,123.59-10,688.20-2,739.87

Finding the Fourth Proportional to 7,123.59, 10,688.20 and 2,739.87

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Solution

The fourth proportional to 7,123.59, 10,688.20 and 2,739.87 is: 4,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.59 : 10,688.20 = 2,739.87 : x
  2. Step 2: Convert to fraction form
    7,123.59/10,688.20 = 2,739.87/x
  3. Step 3: Cross multiply
    7,123.59x = 10,688.20 × 2,739.87
  4. Step 4: Simplify right side
    7,123.59x = 29,284,271.68
  5. Step 5: Solve for x
    x = 29,284,271.68/7,123.59
  6. Step 6: Final answer
    x = 4,110.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.