Home / 7,157.28-9,867.36-4,918.32

Finding the Fourth Proportional to 7,157.28, 9,867.36 and 4,918.32

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Solution

The fourth proportional to 7,157.28, 9,867.36 and 4,918.32 is: 6,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.28 : 9,867.36 = 4,918.32 : x
  2. Step 2: Convert to fraction form
    7,157.28/9,867.36 = 4,918.32/x
  3. Step 3: Cross multiply
    7,157.28x = 9,867.36 × 4,918.32
  4. Step 4: Simplify right side
    7,157.28x = 48,530,834.04
  5. Step 5: Solve for x
    x = 48,530,834.04/7,157.28
  6. Step 6: Final answer
    x = 6,780.63

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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.