Home / 5,123.75-7,687.47-1,792.49

Finding the Fourth Proportional to 5,123.75, 7,687.47 and 1,792.49

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Solution

The fourth proportional to 5,123.75, 7,687.47 and 1,792.49 is: 2,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.75 : 7,687.47 = 1,792.49 : x
  2. Step 2: Convert to fraction form
    5,123.75/7,687.47 = 1,792.49/x
  3. Step 3: Cross multiply
    5,123.75x = 7,687.47 × 1,792.49
  4. Step 4: Simplify right side
    5,123.75x = 13,779,674.66
  5. Step 5: Solve for x
    x = 13,779,674.66/5,123.75
  6. Step 6: Final answer
    x = 2,689.38

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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.