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Finding the Fourth Proportional to 5,657.79, 8,483.93 and 3,318.55

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Solution

The fourth proportional to 5,657.79, 8,483.93 and 3,318.55 is: 4,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.79 : 8,483.93 = 3,318.55 : x
  2. Step 2: Convert to fraction form
    5,657.79/8,483.93 = 3,318.55/x
  3. Step 3: Cross multiply
    5,657.79x = 8,483.93 × 3,318.55
  4. Step 4: Simplify right side
    5,657.79x = 28,154,345.90
  5. Step 5: Solve for x
    x = 28,154,345.90/5,657.79
  6. Step 6: Final answer
    x = 4,976.21

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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.