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Finding the Fourth Proportional to 5,603.79, 7,735.10 and 3,840.51

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Solution

The fourth proportional to 5,603.79, 7,735.10 and 3,840.51 is: 5,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,603.79 : 7,735.10 = 3,840.51 : x
  2. Step 2: Convert to fraction form
    5,603.79/7,735.10 = 3,840.51/x
  3. Step 3: Cross multiply
    5,603.79x = 7,735.10 × 3,840.51
  4. Step 4: Simplify right side
    5,603.79x = 29,706,709.70
  5. Step 5: Solve for x
    x = 29,706,709.70/5,603.79
  6. Step 6: Final answer
    x = 5,301.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.