Home / 8,421.46-11,621.73-5,437.42

Finding the Fourth Proportional to 8,421.46, 11,621.73 and 5,437.42

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Solution

The fourth proportional to 8,421.46, 11,621.73 and 5,437.42 is: 7,503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.46 : 11,621.73 = 5,437.42 : x
  2. Step 2: Convert to fraction form
    8,421.46/11,621.73 = 5,437.42/x
  3. Step 3: Cross multiply
    8,421.46x = 11,621.73 × 5,437.42
  4. Step 4: Simplify right side
    8,421.46x = 63,192,227.14
  5. Step 5: Solve for x
    x = 63,192,227.14/8,421.46
  6. Step 6: Final answer
    x = 7,503.71

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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.