Home / 8,139.28-11,230.32-5,623.60

Finding the Fourth Proportional to 8,139.28, 11,230.32 and 5,623.60

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Solution

The fourth proportional to 8,139.28, 11,230.32 and 5,623.60 is: 7,759.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.28 : 11,230.32 = 5,623.60 : x
  2. Step 2: Convert to fraction form
    8,139.28/11,230.32 = 5,623.60/x
  3. Step 3: Cross multiply
    8,139.28x = 11,230.32 × 5,623.60
  4. Step 4: Simplify right side
    8,139.28x = 63,154,827.55
  5. Step 5: Solve for x
    x = 63,154,827.55/8,139.28
  6. Step 6: Final answer
    x = 7,759.26

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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.