Home / 9,316.25-12,855.65-5,487.28

Finding the Fourth Proportional to 9,316.25, 12,855.65 and 5,487.28

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Solution

The fourth proportional to 9,316.25, 12,855.65 and 5,487.28 is: 7,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.25 : 12,855.65 = 5,487.28 : x
  2. Step 2: Convert to fraction form
    9,316.25/12,855.65 = 5,487.28/x
  3. Step 3: Cross multiply
    9,316.25x = 12,855.65 × 5,487.28
  4. Step 4: Simplify right side
    9,316.25x = 70,542,491.56
  5. Step 5: Solve for x
    x = 70,542,491.56/9,316.25
  6. Step 6: Final answer
    x = 7,571.98

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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.