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Finding the Fourth Proportional to 5,601.78, 8,402.70 and 1,706.40

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Solution

The fourth proportional to 5,601.78, 8,402.70 and 1,706.40 is: 2,559.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,601.78 : 8,402.70 = 1,706.40 : x
  2. Step 2: Convert to fraction form
    5,601.78/8,402.70 = 1,706.40/x
  3. Step 3: Cross multiply
    5,601.78x = 8,402.70 × 1,706.40
  4. Step 4: Simplify right side
    5,601.78x = 14,338,367.28
  5. Step 5: Solve for x
    x = 14,338,367.28/5,601.78
  6. Step 6: Final answer
    x = 2,559.61

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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.