Home / 4,987.02-7,480.44-1,289.22

Finding the Fourth Proportional to 4,987.02, 7,480.44 and 1,289.22

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Solution

The fourth proportional to 4,987.02, 7,480.44 and 1,289.22 is: 1,933.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.02 : 7,480.44 = 1,289.22 : x
  2. Step 2: Convert to fraction form
    4,987.02/7,480.44 = 1,289.22/x
  3. Step 3: Cross multiply
    4,987.02x = 7,480.44 × 1,289.22
  4. Step 4: Simplify right side
    4,987.02x = 9,643,932.86
  5. Step 5: Solve for x
    x = 9,643,932.86/4,987.02
  6. Step 6: Final answer
    x = 1,933.81

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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.