Home / 3,747.09-5,168.75-2,421.55

Finding the Fourth Proportional to 3,747.09, 5,168.75 and 2,421.55

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Solution

The fourth proportional to 3,747.09, 5,168.75 and 2,421.55 is: 3,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.09 : 5,168.75 = 2,421.55 : x
  2. Step 2: Convert to fraction form
    3,747.09/5,168.75 = 2,421.55/x
  3. Step 3: Cross multiply
    3,747.09x = 5,168.75 × 2,421.55
  4. Step 4: Simplify right side
    3,747.09x = 12,516,386.56
  5. Step 5: Solve for x
    x = 12,516,386.56/3,747.09
  6. Step 6: Final answer
    x = 3,340.30

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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.