Home / 3,639.17-5,431.75-3,136.69

Finding the Fourth Proportional to 3,639.17, 5,431.75 and 3,136.69

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Solution

The fourth proportional to 3,639.17, 5,431.75 and 3,136.69 is: 4,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.17 : 5,431.75 = 3,136.69 : x
  2. Step 2: Convert to fraction form
    3,639.17/5,431.75 = 3,136.69/x
  3. Step 3: Cross multiply
    3,639.17x = 5,431.75 × 3,136.69
  4. Step 4: Simplify right side
    3,639.17x = 17,037,687.53
  5. Step 5: Solve for x
    x = 17,037,687.53/3,639.17
  6. Step 6: Final answer
    x = 4,681.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.