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Finding the Fourth Proportional to 5,590.50, 7,718.13 and 3,730.74

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Solution

The fourth proportional to 5,590.50, 7,718.13 and 3,730.74 is: 5,150.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.50 : 7,718.13 = 3,730.74 : x
  2. Step 2: Convert to fraction form
    5,590.50/7,718.13 = 3,730.74/x
  3. Step 3: Cross multiply
    5,590.50x = 7,718.13 × 3,730.74
  4. Step 4: Simplify right side
    5,590.50x = 28,794,336.32
  5. Step 5: Solve for x
    x = 28,794,336.32/5,590.50
  6. Step 6: Final answer
    x = 5,150.58

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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.