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Finding the Fourth Proportional to 3,068.09, 4,601.49 and 988.28

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Solution

The fourth proportional to 3,068.09, 4,601.49 and 988.28 is: 1,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,068.09 : 4,601.49 = 988.28 : x
  2. Step 2: Convert to fraction form
    3,068.09/4,601.49 = 988.28/x
  3. Step 3: Cross multiply
    3,068.09x = 4,601.49 × 988.28
  4. Step 4: Simplify right side
    3,068.09x = 4,547,560.54
  5. Step 5: Solve for x
    x = 4,547,560.54/3,068.09
  6. Step 6: Final answer
    x = 1,482.21

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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.