Home / 4,987.08-7,480.64-1,289.05

Finding the Fourth Proportional to 4,987.08, 7,480.64 and 1,289.05

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Solution

The fourth proportional to 4,987.08, 7,480.64 and 1,289.05 is: 1,933.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.08 : 7,480.64 = 1,289.05 : x
  2. Step 2: Convert to fraction form
    4,987.08/7,480.64 = 1,289.05/x
  3. Step 3: Cross multiply
    4,987.08x = 7,480.64 × 1,289.05
  4. Step 4: Simplify right side
    4,987.08x = 9,642,903.51
  5. Step 5: Solve for x
    x = 9,642,903.51/4,987.08
  6. Step 6: Final answer
    x = 1,933.58

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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.