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Finding the Fourth Proportional to 5,690.70, 8,536.05 and 3,722.40

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Solution

The fourth proportional to 5,690.70, 8,536.05 and 3,722.40 is: 5,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690.70 : 8,536.05 = 3,722.40 : x
  2. Step 2: Convert to fraction form
    5,690.70/8,536.05 = 3,722.40/x
  3. Step 3: Cross multiply
    5,690.70x = 8,536.05 × 3,722.40
  4. Step 4: Simplify right side
    5,690.70x = 31,774,592.52
  5. Step 5: Solve for x
    x = 31,774,592.52/5,690.70
  6. Step 6: Final answer
    x = 5,583.60

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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.