Home / 3,923.43-5,411.49-2,487.30

Finding the Fourth Proportional to 3,923.43, 5,411.49 and 2,487.30

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Solution

The fourth proportional to 3,923.43, 5,411.49 and 2,487.30 is: 3,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.43 : 5,411.49 = 2,487.30 : x
  2. Step 2: Convert to fraction form
    3,923.43/5,411.49 = 2,487.30/x
  3. Step 3: Cross multiply
    3,923.43x = 5,411.49 × 2,487.30
  4. Step 4: Simplify right side
    3,923.43x = 13,459,999.08
  5. Step 5: Solve for x
    x = 13,459,999.08/3,923.43
  6. Step 6: Final answer
    x = 3,430.67

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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.