Home / 9,170.90-13,756.78-2,931.20

Finding the Fourth Proportional to 9,170.90, 13,756.78 and 2,931.20

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Solution

The fourth proportional to 9,170.90, 13,756.78 and 2,931.20 is: 4,396.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.90 : 13,756.78 = 2,931.20 : x
  2. Step 2: Convert to fraction form
    9,170.90/13,756.78 = 2,931.20/x
  3. Step 3: Cross multiply
    9,170.90x = 13,756.78 × 2,931.20
  4. Step 4: Simplify right side
    9,170.90x = 40,323,873.54
  5. Step 5: Solve for x
    x = 40,323,873.54/9,170.90
  6. Step 6: Final answer
    x = 4,396.94

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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.