Home / 12,782.79-19,177.07-3,898.90

Finding the Fourth Proportional to 12,782.79, 19,177.07 and 3,898.90

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Solution

The fourth proportional to 12,782.79, 19,177.07 and 3,898.90 is: 5,849.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782.79 : 19,177.07 = 3,898.90 : x
  2. Step 2: Convert to fraction form
    12,782.79/19,177.07 = 3,898.90/x
  3. Step 3: Cross multiply
    12,782.79x = 19,177.07 × 3,898.90
  4. Step 4: Simplify right side
    12,782.79x = 74,769,478.22
  5. Step 5: Solve for x
    x = 74,769,478.22/12,782.79
  6. Step 6: Final answer
    x = 5,849.23

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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.