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Finding the Fourth Proportional to 4,898.70, 7,350.81 and 1,979.07

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Solution

The fourth proportional to 4,898.70, 7,350.81 and 1,979.07 is: 2,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,898.70 : 7,350.81 = 1,979.07 : x
  2. Step 2: Convert to fraction form
    4,898.70/7,350.81 = 1,979.07/x
  3. Step 3: Cross multiply
    4,898.70x = 7,350.81 × 1,979.07
  4. Step 4: Simplify right side
    4,898.70x = 14,547,767.55
  5. Step 5: Solve for x
    x = 14,547,767.55/4,898.70
  6. Step 6: Final answer
    x = 2,969.72

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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.