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Finding the Fourth Proportional to 3,751.26, 5,626.90 and 977.93

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Solution

The fourth proportional to 3,751.26, 5,626.90 and 977.93 is: 1,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.26 : 5,626.90 = 977.93 : x
  2. Step 2: Convert to fraction form
    3,751.26/5,626.90 = 977.93/x
  3. Step 3: Cross multiply
    3,751.26x = 5,626.90 × 977.93
  4. Step 4: Simplify right side
    3,751.26x = 5,502,681.29
  5. Step 5: Solve for x
    x = 5,502,681.29/3,751.26
  6. Step 6: Final answer
    x = 1,466.89

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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.