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Finding the Fourth Proportional to 3,465, 5,197.50 and 1,385.93

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Solution

The fourth proportional to 3,465, 5,197.50 and 1,385.93 is: 2,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465 : 5,197.50 = 1,385.93 : x
  2. Step 2: Convert to fraction form
    3,465/5,197.50 = 1,385.93/x
  3. Step 3: Cross multiply
    3,465x = 5,197.50 × 1,385.93
  4. Step 4: Simplify right side
    3,465x = 7,203,384.17
  5. Step 5: Solve for x
    x = 7,203,384.17/3,465
  6. Step 6: Final answer
    x = 2,078.90

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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.