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Finding the Fourth Proportional to 3,622.70, 5,423.70 and 2,386.32

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Solution

The fourth proportional to 3,622.70, 5,423.70 and 2,386.32 is: 3,572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,622.70 : 5,423.70 = 2,386.32 : x
  2. Step 2: Convert to fraction form
    3,622.70/5,423.70 = 2,386.32/x
  3. Step 3: Cross multiply
    3,622.70x = 5,423.70 × 2,386.32
  4. Step 4: Simplify right side
    3,622.70x = 12,942,683.78
  5. Step 5: Solve for x
    x = 12,942,683.78/3,622.70
  6. Step 6: Final answer
    x = 3,572.66

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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.