Home / 5,153.91-7,731.78-1,871.59

Finding the Fourth Proportional to 5,153.91, 7,731.78 and 1,871.59

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Solution

The fourth proportional to 5,153.91, 7,731.78 and 1,871.59 is: 2,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.91 : 7,731.78 = 1,871.59 : x
  2. Step 2: Convert to fraction form
    5,153.91/7,731.78 = 1,871.59/x
  3. Step 3: Cross multiply
    5,153.91x = 7,731.78 × 1,871.59
  4. Step 4: Simplify right side
    5,153.91x = 14,470,722.13
  5. Step 5: Solve for x
    x = 14,470,722.13/5,153.91
  6. Step 6: Final answer
    x = 2,807.72

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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.