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Finding the Fourth Proportional to 1,413.12, 2,107.12 and 1,410.40

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Solution

The fourth proportional to 1,413.12, 2,107.12 and 1,410.40 is: 2,103.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.12 : 2,107.12 = 1,410.40 : x
  2. Step 2: Convert to fraction form
    1,413.12/2,107.12 = 1,410.40/x
  3. Step 3: Cross multiply
    1,413.12x = 2,107.12 × 1,410.40
  4. Step 4: Simplify right side
    1,413.12x = 2,971,882.05
  5. Step 5: Solve for x
    x = 2,971,882.05/1,413.12
  6. Step 6: Final answer
    x = 2,103.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.