Home / 5,125.21-7,687.43-1,376.68

Finding the Fourth Proportional to 5,125.21, 7,687.43 and 1,376.68

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Solution

The fourth proportional to 5,125.21, 7,687.43 and 1,376.68 is: 2,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.21 : 7,687.43 = 1,376.68 : x
  2. Step 2: Convert to fraction form
    5,125.21/7,687.43 = 1,376.68/x
  3. Step 3: Cross multiply
    5,125.21x = 7,687.43 × 1,376.68
  4. Step 4: Simplify right side
    5,125.21x = 10,583,085.81
  5. Step 5: Solve for x
    x = 10,583,085.81/5,125.21
  6. Step 6: Final answer
    x = 2,064.91

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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.