Home / 5,219.91-7,827.71-1,931.09

Finding the Fourth Proportional to 5,219.91, 7,827.71 and 1,931.09

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Solution

The fourth proportional to 5,219.91, 7,827.71 and 1,931.09 is: 2,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.91 : 7,827.71 = 1,931.09 : x
  2. Step 2: Convert to fraction form
    5,219.91/7,827.71 = 1,931.09/x
  3. Step 3: Cross multiply
    5,219.91x = 7,827.71 × 1,931.09
  4. Step 4: Simplify right side
    5,219.91x = 15,115,963.71
  5. Step 5: Solve for x
    x = 15,115,963.71/5,219.91
  6. Step 6: Final answer
    x = 2,895.83

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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.