Home / 8,885.28-12,259.44-5,157.12

Finding the Fourth Proportional to 8,885.28, 12,259.44 and 5,157.12

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Solution

The fourth proportional to 8,885.28, 12,259.44 and 5,157.12 is: 7,115.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.28 : 12,259.44 = 5,157.12 : x
  2. Step 2: Convert to fraction form
    8,885.28/12,259.44 = 5,157.12/x
  3. Step 3: Cross multiply
    8,885.28x = 12,259.44 × 5,157.12
  4. Step 4: Simplify right side
    8,885.28x = 63,223,403.21
  5. Step 5: Solve for x
    x = 63,223,403.21/8,885.28
  6. Step 6: Final answer
    x = 7,115.52

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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.