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Finding the Fourth Proportional to 1,930.70, 2,898.30 and 1,007.30

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Solution

The fourth proportional to 1,930.70, 2,898.30 and 1,007.30 is: 1,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.70 : 2,898.30 = 1,007.30 : x
  2. Step 2: Convert to fraction form
    1,930.70/2,898.30 = 1,007.30/x
  3. Step 3: Cross multiply
    1,930.70x = 2,898.30 × 1,007.30
  4. Step 4: Simplify right side
    1,930.70x = 2,919,457.59
  5. Step 5: Solve for x
    x = 2,919,457.59/1,930.70
  6. Step 6: Final answer
    x = 1,512.12

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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.