Home / 8,137.28-11,225.13-5,485.55

Finding the Fourth Proportional to 8,137.28, 11,225.13 and 5,485.55

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Solution

The fourth proportional to 8,137.28, 11,225.13 and 5,485.55 is: 7,567.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.28 : 11,225.13 = 5,485.55 : x
  2. Step 2: Convert to fraction form
    8,137.28/11,225.13 = 5,485.55/x
  3. Step 3: Cross multiply
    8,137.28x = 11,225.13 × 5,485.55
  4. Step 4: Simplify right side
    8,137.28x = 61,575,955.75
  5. Step 5: Solve for x
    x = 61,575,955.75/8,137.28
  6. Step 6: Final answer
    x = 7,567.15

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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.