Home / 9,720.28-13,415.88-5,741.20

Finding the Fourth Proportional to 9,720.28, 13,415.88 and 5,741.20

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Solution

The fourth proportional to 9,720.28, 13,415.88 and 5,741.20 is: 7,923.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.28 : 13,415.88 = 5,741.20 : x
  2. Step 2: Convert to fraction form
    9,720.28/13,415.88 = 5,741.20/x
  3. Step 3: Cross multiply
    9,720.28x = 13,415.88 × 5,741.20
  4. Step 4: Simplify right side
    9,720.28x = 77,023,250.26
  5. Step 5: Solve for x
    x = 77,023,250.26/9,720.28
  6. Step 6: Final answer
    x = 7,923.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.