Home / 4,987.75-7,484.97-3,140.14

Finding the Fourth Proportional to 4,987.75, 7,484.97 and 3,140.14

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Solution

The fourth proportional to 4,987.75, 7,484.97 and 3,140.14 is: 4,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.75 : 7,484.97 = 3,140.14 : x
  2. Step 2: Convert to fraction form
    4,987.75/7,484.97 = 3,140.14/x
  3. Step 3: Cross multiply
    4,987.75x = 7,484.97 × 3,140.14
  4. Step 4: Simplify right side
    4,987.75x = 23,503,853.70
  5. Step 5: Solve for x
    x = 23,503,853.70/4,987.75
  6. Step 6: Final answer
    x = 4,712.32

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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.