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Finding the Fourth Proportional to 6,223.68, 8,587.80 and 3,571.20

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Solution

The fourth proportional to 6,223.68, 8,587.80 and 3,571.20 is: 4,927.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,223.68 : 8,587.80 = 3,571.20 : x
  2. Step 2: Convert to fraction form
    6,223.68/8,587.80 = 3,571.20/x
  3. Step 3: Cross multiply
    6,223.68x = 8,587.80 × 3,571.20
  4. Step 4: Simplify right side
    6,223.68x = 30,668,751.36
  5. Step 5: Solve for x
    x = 30,668,751.36/6,223.68
  6. Step 6: Final answer
    x = 4,927.75

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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.