Home / 7,077.72-9,767.26-3,933.91

Finding the Fourth Proportional to 7,077.72, 9,767.26 and 3,933.91

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Solution

The fourth proportional to 7,077.72, 9,767.26 and 3,933.91 is: 5,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.72 : 9,767.26 = 3,933.91 : x
  2. Step 2: Convert to fraction form
    7,077.72/9,767.26 = 3,933.91/x
  3. Step 3: Cross multiply
    7,077.72x = 9,767.26 × 3,933.91
  4. Step 4: Simplify right side
    7,077.72x = 38,423,521.79
  5. Step 5: Solve for x
    x = 38,423,521.79/7,077.72
  6. Step 6: Final answer
    x = 5,428.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.