Home / 5,378.76-7,425.12-3,611.34

Finding the Fourth Proportional to 5,378.76, 7,425.12 and 3,611.34

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Solution

The fourth proportional to 5,378.76, 7,425.12 and 3,611.34 is: 4,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.76 : 7,425.12 = 3,611.34 : x
  2. Step 2: Convert to fraction form
    5,378.76/7,425.12 = 3,611.34/x
  3. Step 3: Cross multiply
    5,378.76x = 7,425.12 × 3,611.34
  4. Step 4: Simplify right side
    5,378.76x = 26,814,632.86
  5. Step 5: Solve for x
    x = 26,814,632.86/5,378.76
  6. Step 6: Final answer
    x = 4,985.28

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Half scale
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Double scale
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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.