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Finding the Fourth Proportional to 2,343.78, 3,515.70 and 700.20

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Solution

The fourth proportional to 2,343.78, 3,515.70 and 700.20 is: 1,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,343.78 : 3,515.70 = 700.20 : x
  2. Step 2: Convert to fraction form
    2,343.78/3,515.70 = 700.20/x
  3. Step 3: Cross multiply
    2,343.78x = 3,515.70 × 700.20
  4. Step 4: Simplify right side
    2,343.78x = 2,461,693.14
  5. Step 5: Solve for x
    x = 2,461,693.14/2,343.78
  6. Step 6: Final answer
    x = 1,050.31

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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.