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Finding the Fourth Proportional to 5,659.18, 8,486.72 and 1,960.40

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Solution

The fourth proportional to 5,659.18, 8,486.72 and 1,960.40 is: 2,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,659.18 : 8,486.72 = 1,960.40 : x
  2. Step 2: Convert to fraction form
    5,659.18/8,486.72 = 1,960.40/x
  3. Step 3: Cross multiply
    5,659.18x = 8,486.72 × 1,960.40
  4. Step 4: Simplify right side
    5,659.18x = 16,637,365.89
  5. Step 5: Solve for x
    x = 16,637,365.89/5,659.18
  6. Step 6: Final answer
    x = 2,939.89

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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.