Home / 4,687.81-7,031.57-1,914.51

Finding the Fourth Proportional to 4,687.81, 7,031.57 and 1,914.51

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Solution

The fourth proportional to 4,687.81, 7,031.57 and 1,914.51 is: 2,871.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.81 : 7,031.57 = 1,914.51 : x
  2. Step 2: Convert to fraction form
    4,687.81/7,031.57 = 1,914.51/x
  3. Step 3: Cross multiply
    4,687.81x = 7,031.57 × 1,914.51
  4. Step 4: Simplify right side
    4,687.81x = 13,462,011.08
  5. Step 5: Solve for x
    x = 13,462,011.08/4,687.81
  6. Step 6: Final answer
    x = 2,871.71

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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.