Home / 8,858.20-12,220.26-5,315.32

Finding the Fourth Proportional to 8,858.20, 12,220.26 and 5,315.32

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Solution

The fourth proportional to 8,858.20, 12,220.26 and 5,315.32 is: 7,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.20 : 12,220.26 = 5,315.32 : x
  2. Step 2: Convert to fraction form
    8,858.20/12,220.26 = 5,315.32/x
  3. Step 3: Cross multiply
    8,858.20x = 12,220.26 × 5,315.32
  4. Step 4: Simplify right side
    8,858.20x = 64,954,592.38
  5. Step 5: Solve for x
    x = 64,954,592.38/8,858.20
  6. Step 6: Final answer
    x = 7,332.71

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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.