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Finding the Fourth Proportional to 10,603.83, 15,900.66 and 3,938.07

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Solution

The fourth proportional to 10,603.83, 15,900.66 and 3,938.07 is: 5,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.83 : 15,900.66 = 3,938.07 : x
  2. Step 2: Convert to fraction form
    10,603.83/15,900.66 = 3,938.07/x
  3. Step 3: Cross multiply
    10,603.83x = 15,900.66 × 3,938.07
  4. Step 4: Simplify right side
    10,603.83x = 62,617,912.13
  5. Step 5: Solve for x
    x = 62,617,912.13/10,603.83
  6. Step 6: Final answer
    x = 5,905.22

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1.5x scale

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.