Home / 5,411.75-8,118.39-2,123.06

Finding the Fourth Proportional to 5,411.75, 8,118.39 and 2,123.06

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Solution

The fourth proportional to 5,411.75, 8,118.39 and 2,123.06 is: 3,184.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.75 : 8,118.39 = 2,123.06 : x
  2. Step 2: Convert to fraction form
    5,411.75/8,118.39 = 2,123.06/x
  3. Step 3: Cross multiply
    5,411.75x = 8,118.39 × 2,123.06
  4. Step 4: Simplify right side
    5,411.75x = 17,235,829.07
  5. Step 5: Solve for x
    x = 17,235,829.07/5,411.75
  6. Step 6: Final answer
    x = 3,184.89

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1.5x scale

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.