Home / 2,124.11-2,931.05-1,179.67

Finding the Fourth Proportional to 2,124.11, 2,931.05 and 1,179.67

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Solution

The fourth proportional to 2,124.11, 2,931.05 and 1,179.67 is: 1,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.11 : 2,931.05 = 1,179.67 : x
  2. Step 2: Convert to fraction form
    2,124.11/2,931.05 = 1,179.67/x
  3. Step 3: Cross multiply
    2,124.11x = 2,931.05 × 1,179.67
  4. Step 4: Simplify right side
    2,124.11x = 3,457,667.38
  5. Step 5: Solve for x
    x = 3,457,667.38/2,124.11
  6. Step 6: Final answer
    x = 1,627.82

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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.