Home / 3,136.50-4,706.58-1,405.20

Finding the Fourth Proportional to 3,136.50, 4,706.58 and 1,405.20

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Solution

The fourth proportional to 3,136.50, 4,706.58 and 1,405.20 is: 2,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.50 : 4,706.58 = 1,405.20 : x
  2. Step 2: Convert to fraction form
    3,136.50/4,706.58 = 1,405.20/x
  3. Step 3: Cross multiply
    3,136.50x = 4,706.58 × 1,405.20
  4. Step 4: Simplify right side
    3,136.50x = 6,613,686.22
  5. Step 5: Solve for x
    x = 6,613,686.22/3,136.50
  6. Step 6: Final answer
    x = 2,108.62

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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.