Home / 5,107.24-7,661.33-1,987.48

Finding the Fourth Proportional to 5,107.24, 7,661.33 and 1,987.48

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Solution

The fourth proportional to 5,107.24, 7,661.33 and 1,987.48 is: 2,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.24 : 7,661.33 = 1,987.48 : x
  2. Step 2: Convert to fraction form
    5,107.24/7,661.33 = 1,987.48/x
  3. Step 3: Cross multiply
    5,107.24x = 7,661.33 × 1,987.48
  4. Step 4: Simplify right side
    5,107.24x = 15,226,740.15
  5. Step 5: Solve for x
    x = 15,226,740.15/5,107.24
  6. Step 6: Final answer
    x = 2,981.40

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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.