Home / 3,140.10-4,715.10-2,912.70

Finding the Fourth Proportional to 3,140.10, 4,715.10 and 2,912.70

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Solution

The fourth proportional to 3,140.10, 4,715.10 and 2,912.70 is: 4,373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.10 : 4,715.10 = 2,912.70 : x
  2. Step 2: Convert to fraction form
    3,140.10/4,715.10 = 2,912.70/x
  3. Step 3: Cross multiply
    3,140.10x = 4,715.10 × 2,912.70
  4. Step 4: Simplify right side
    3,140.10x = 13,733,671.77
  5. Step 5: Solve for x
    x = 13,733,671.77/3,140.10
  6. Step 6: Final answer
    x = 4,373.64

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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.