Home / 7,709.36-10,638.93-4,172.57

Finding the Fourth Proportional to 7,709.36, 10,638.93 and 4,172.57

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Solution

The fourth proportional to 7,709.36, 10,638.93 and 4,172.57 is: 5,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.36 : 10,638.93 = 4,172.57 : x
  2. Step 2: Convert to fraction form
    7,709.36/10,638.93 = 4,172.57/x
  3. Step 3: Cross multiply
    7,709.36x = 10,638.93 × 4,172.57
  4. Step 4: Simplify right side
    7,709.36x = 44,391,626.96
  5. Step 5: Solve for x
    x = 44,391,626.96/7,709.36
  6. Step 6: Final answer
    x = 5,758.15

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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.