Home / 7,111.70-9,814.26-3,925.06

Finding the Fourth Proportional to 7,111.70, 9,814.26 and 3,925.06

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Solution

The fourth proportional to 7,111.70, 9,814.26 and 3,925.06 is: 5,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.70 : 9,814.26 = 3,925.06 : x
  2. Step 2: Convert to fraction form
    7,111.70/9,814.26 = 3,925.06/x
  3. Step 3: Cross multiply
    7,111.70x = 9,814.26 × 3,925.06
  4. Step 4: Simplify right side
    7,111.70x = 38,521,549.54
  5. Step 5: Solve for x
    x = 38,521,549.54/7,111.70
  6. Step 6: Final answer
    x = 5,416.65

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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.