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Finding the Fourth Proportional to 5,659.85, 7,818.07 and 4,718.72

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Solution

The fourth proportional to 5,659.85, 7,818.07 and 4,718.72 is: 6,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,659.85 : 7,818.07 = 4,718.72 : x
  2. Step 2: Convert to fraction form
    5,659.85/7,818.07 = 4,718.72/x
  3. Step 3: Cross multiply
    5,659.85x = 7,818.07 × 4,718.72
  4. Step 4: Simplify right side
    5,659.85x = 36,891,269.62
  5. Step 5: Solve for x
    x = 36,891,269.62/5,659.85
  6. Step 6: Final answer
    x = 6,518.07

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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.