Home / 7,020.42-9,688.79-3,877.22

Finding the Fourth Proportional to 7,020.42, 9,688.79 and 3,877.22

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Solution

The fourth proportional to 7,020.42, 9,688.79 and 3,877.22 is: 5,350.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.42 : 9,688.79 = 3,877.22 : x
  2. Step 2: Convert to fraction form
    7,020.42/9,688.79 = 3,877.22/x
  3. Step 3: Cross multiply
    7,020.42x = 9,688.79 × 3,877.22
  4. Step 4: Simplify right side
    7,020.42x = 37,565,538.87
  5. Step 5: Solve for x
    x = 37,565,538.87/7,020.42
  6. Step 6: Final answer
    x = 5,350.89

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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.