Home / 5,031.78-7,548.34-2,109.40

Finding the Fourth Proportional to 5,031.78, 7,548.34 and 2,109.40

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Solution

The fourth proportional to 5,031.78, 7,548.34 and 2,109.40 is: 3,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,031.78 : 7,548.34 = 2,109.40 : x
  2. Step 2: Convert to fraction form
    5,031.78/7,548.34 = 2,109.40/x
  3. Step 3: Cross multiply
    5,031.78x = 7,548.34 × 2,109.40
  4. Step 4: Simplify right side
    5,031.78x = 15,922,430.65
  5. Step 5: Solve for x
    x = 15,922,430.65/5,031.78
  6. Step 6: Final answer
    x = 3,164.38

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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.