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Finding the Fourth Proportional to 3,501, 5,252.40 and 1,309.76

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Solution

The fourth proportional to 3,501, 5,252.40 and 1,309.76 is: 1,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,501 : 5,252.40 = 1,309.76 : x
  2. Step 2: Convert to fraction form
    3,501/5,252.40 = 1,309.76/x
  3. Step 3: Cross multiply
    3,501x = 5,252.40 × 1,309.76
  4. Step 4: Simplify right side
    3,501x = 6,879,357.16
  5. Step 5: Solve for x
    x = 6,879,357.16/3,501
  6. Step 6: Final answer
    x = 1,964.97

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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.