Home / 7,085.20-9,777.33-3,898.48

Finding the Fourth Proportional to 7,085.20, 9,777.33 and 3,898.48

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Solution

The fourth proportional to 7,085.20, 9,777.33 and 3,898.48 is: 5,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.20 : 9,777.33 = 3,898.48 : x
  2. Step 2: Convert to fraction form
    7,085.20/9,777.33 = 3,898.48/x
  3. Step 3: Cross multiply
    7,085.20x = 9,777.33 × 3,898.48
  4. Step 4: Simplify right side
    7,085.20x = 38,116,725.46
  5. Step 5: Solve for x
    x = 38,116,725.46/7,085.20
  6. Step 6: Final answer
    x = 5,379.77

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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.