Home / 4,987.18-7,480.74-1,289.09

Finding the Fourth Proportional to 4,987.18, 7,480.74 and 1,289.09

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Solution

The fourth proportional to 4,987.18, 7,480.74 and 1,289.09 is: 1,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.18 : 7,480.74 = 1,289.09 : x
  2. Step 2: Convert to fraction form
    4,987.18/7,480.74 = 1,289.09/x
  3. Step 3: Cross multiply
    4,987.18x = 7,480.74 × 1,289.09
  4. Step 4: Simplify right side
    4,987.18x = 9,643,340.68
  5. Step 5: Solve for x
    x = 9,643,340.68/4,987.18
  6. Step 6: Final answer
    x = 1,933.63

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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.