Home / 5,347.80-8,021.70-3,401.40

Finding the Fourth Proportional to 5,347.80, 8,021.70 and 3,401.40

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Solution

The fourth proportional to 5,347.80, 8,021.70 and 3,401.40 is: 5,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.80 : 8,021.70 = 3,401.40 : x
  2. Step 2: Convert to fraction form
    5,347.80/8,021.70 = 3,401.40/x
  3. Step 3: Cross multiply
    5,347.80x = 8,021.70 × 3,401.40
  4. Step 4: Simplify right side
    5,347.80x = 27,285,010.38
  5. Step 5: Solve for x
    x = 27,285,010.38/5,347.80
  6. Step 6: Final answer
    x = 5,102.10

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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.