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Finding the Fourth Proportional to 3,409.97, 5,115.18 and 1,070.07

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Solution

The fourth proportional to 3,409.97, 5,115.18 and 1,070.07 is: 1,605.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.97 : 5,115.18 = 1,070.07 : x
  2. Step 2: Convert to fraction form
    3,409.97/5,115.18 = 1,070.07/x
  3. Step 3: Cross multiply
    3,409.97x = 5,115.18 × 1,070.07
  4. Step 4: Simplify right side
    3,409.97x = 5,473,594.38
  5. Step 5: Solve for x
    x = 5,473,594.38/3,409.97
  6. Step 6: Final answer
    x = 1,605.17

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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.