Home / 7,709.25-10,638.77-4,172.49

Finding the Fourth Proportional to 7,709.25, 10,638.77 and 4,172.49

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Solution

The fourth proportional to 7,709.25, 10,638.77 and 4,172.49 is: 5,758.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.25 : 10,638.77 = 4,172.49 : x
  2. Step 2: Convert to fraction form
    7,709.25/10,638.77 = 4,172.49/x
  3. Step 3: Cross multiply
    7,709.25x = 10,638.77 × 4,172.49
  4. Step 4: Simplify right side
    7,709.25x = 44,390,140.57
  5. Step 5: Solve for x
    x = 44,390,140.57/7,709.25
  6. Step 6: Final answer
    x = 5,758.04

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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.