Home / 5,123.69-7,687.35-2,528.45

Finding the Fourth Proportional to 5,123.69, 7,687.35 and 2,528.45

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Solution

The fourth proportional to 5,123.69, 7,687.35 and 2,528.45 is: 3,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.69 : 7,687.35 = 2,528.45 : x
  2. Step 2: Convert to fraction form
    5,123.69/7,687.35 = 2,528.45/x
  3. Step 3: Cross multiply
    5,123.69x = 7,687.35 × 2,528.45
  4. Step 4: Simplify right side
    5,123.69x = 19,437,080.11
  5. Step 5: Solve for x
    x = 19,437,080.11/5,123.69
  6. Step 6: Final answer
    x = 3,793.57

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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.