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Finding the Fourth Proportional to 28,958, 43,437 and 7,070

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Solution

The fourth proportional to 28,958, 43,437 and 7,070 is: 10,605

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,958 : 43,437 = 7,070 : x
  2. Step 2: Convert to fraction form
    28,958/43,437 = 7,070/x
  3. Step 3: Cross multiply
    28,958x = 43,437 × 7,070
  4. Step 4: Simplify right side
    28,958x = 307,099,590
  5. Step 5: Solve for x
    x = 307,099,590/28,958
  6. Step 6: Final answer
    x = 10,605

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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.