Home / 5,127.49-7,686.60-1,839.81

Finding the Fourth Proportional to 5,127.49, 7,686.60 and 1,839.81

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Solution

The fourth proportional to 5,127.49, 7,686.60 and 1,839.81 is: 2,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.49 : 7,686.60 = 1,839.81 : x
  2. Step 2: Convert to fraction form
    5,127.49/7,686.60 = 1,839.81/x
  3. Step 3: Cross multiply
    5,127.49x = 7,686.60 × 1,839.81
  4. Step 4: Simplify right side
    5,127.49x = 14,141,856.14
  5. Step 5: Solve for x
    x = 14,141,856.14/5,127.49
  6. Step 6: Final answer
    x = 2,758.05

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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.