Home / 5,586.42-8,378.55-1,689.78

Finding the Fourth Proportional to 5,586.42, 8,378.55 and 1,689.78

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Solution

The fourth proportional to 5,586.42, 8,378.55 and 1,689.78 is: 2,534.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,586.42 : 8,378.55 = 1,689.78 : x
  2. Step 2: Convert to fraction form
    5,586.42/8,378.55 = 1,689.78/x
  3. Step 3: Cross multiply
    5,586.42x = 8,378.55 × 1,689.78
  4. Step 4: Simplify right side
    5,586.42x = 14,157,906.22
  5. Step 5: Solve for x
    x = 14,157,906.22/5,586.42
  6. Step 6: Final answer
    x = 2,534.34

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.