Home / 3,430.34-4,735.91-2,172.48

Finding the Fourth Proportional to 3,430.34, 4,735.91 and 2,172.48

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Solution

The fourth proportional to 3,430.34, 4,735.91 and 2,172.48 is: 2,999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.34 : 4,735.91 = 2,172.48 : x
  2. Step 2: Convert to fraction form
    3,430.34/4,735.91 = 2,172.48/x
  3. Step 3: Cross multiply
    3,430.34x = 4,735.91 × 2,172.48
  4. Step 4: Simplify right side
    3,430.34x = 10,288,669.76
  5. Step 5: Solve for x
    x = 10,288,669.76/3,430.34
  6. Step 6: Final answer
    x = 2,999.31

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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.