Home / 5,126.72-7,688.04-1,838.80

Finding the Fourth Proportional to 5,126.72, 7,688.04 and 1,838.80

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Solution

The fourth proportional to 5,126.72, 7,688.04 and 1,838.80 is: 2,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.72 : 7,688.04 = 1,838.80 : x
  2. Step 2: Convert to fraction form
    5,126.72/7,688.04 = 1,838.80/x
  3. Step 3: Cross multiply
    5,126.72x = 7,688.04 × 1,838.80
  4. Step 4: Simplify right side
    5,126.72x = 14,136,767.95
  5. Step 5: Solve for x
    x = 14,136,767.95/5,126.72
  6. Step 6: Final answer
    x = 2,757.47

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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.