Home / 5,127.12-7,688.79-1,839.42

Finding the Fourth Proportional to 5,127.12, 7,688.79 and 1,839.42

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Solution

The fourth proportional to 5,127.12, 7,688.79 and 1,839.42 is: 2,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.12 : 7,688.79 = 1,839.42 : x
  2. Step 2: Convert to fraction form
    5,127.12/7,688.79 = 1,839.42/x
  3. Step 3: Cross multiply
    5,127.12x = 7,688.79 × 1,839.42
  4. Step 4: Simplify right side
    5,127.12x = 14,142,914.10
  5. Step 5: Solve for x
    x = 14,142,914.10/5,127.12
  6. Step 6: Final answer
    x = 2,758.45

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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.