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Finding the Fourth Proportional to 2,807.53, 4,212.51 and 1,346.70

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Solution

The fourth proportional to 2,807.53, 4,212.51 and 1,346.70 is: 2,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.53 : 4,212.51 = 1,346.70 : x
  2. Step 2: Convert to fraction form
    2,807.53/4,212.51 = 1,346.70/x
  3. Step 3: Cross multiply
    2,807.53x = 4,212.51 × 1,346.70
  4. Step 4: Simplify right side
    2,807.53x = 5,672,987.22
  5. Step 5: Solve for x
    x = 5,672,987.22/2,807.53
  6. Step 6: Final answer
    x = 2,020.63

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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.