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Finding the Fourth Proportional to 10,405.70, 15,605.04 and 3,007.70

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Solution

The fourth proportional to 10,405.70, 15,605.04 and 3,007.70 is: 4,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,405.70 : 15,605.04 = 3,007.70 : x
  2. Step 2: Convert to fraction form
    10,405.70/15,605.04 = 3,007.70/x
  3. Step 3: Cross multiply
    10,405.70x = 15,605.04 × 3,007.70
  4. Step 4: Simplify right side
    10,405.70x = 46,935,278.81
  5. Step 5: Solve for x
    x = 46,935,278.81/10,405.70
  6. Step 6: Final answer
    x = 4,510.54

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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.