Home / 5,136.84-7,703.64-1,438.79

Finding the Fourth Proportional to 5,136.84, 7,703.64 and 1,438.79

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Solution

The fourth proportional to 5,136.84, 7,703.64 and 1,438.79 is: 2,157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.84 : 7,703.64 = 1,438.79 : x
  2. Step 2: Convert to fraction form
    5,136.84/7,703.64 = 1,438.79/x
  3. Step 3: Cross multiply
    5,136.84x = 7,703.64 × 1,438.79
  4. Step 4: Simplify right side
    5,136.84x = 11,083,881.68
  5. Step 5: Solve for x
    x = 11,083,881.68/5,136.84
  6. Step 6: Final answer
    x = 2,157.72

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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.