Home / 7,148.13-10,720.25-2,987.27

Finding the Fourth Proportional to 7,148.13, 10,720.25 and 2,987.27

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Solution

The fourth proportional to 7,148.13, 10,720.25 and 2,987.27 is: 4,480.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.13 : 10,720.25 = 2,987.27 : x
  2. Step 2: Convert to fraction form
    7,148.13/10,720.25 = 2,987.27/x
  3. Step 3: Cross multiply
    7,148.13x = 10,720.25 × 2,987.27
  4. Step 4: Simplify right side
    7,148.13x = 32,024,212.68
  5. Step 5: Solve for x
    x = 32,024,212.68/7,148.13
  6. Step 6: Final answer
    x = 4,480.08

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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.