Home / 5,421.76-7,479.81-3,653.93

Finding the Fourth Proportional to 5,421.76, 7,479.81 and 3,653.93

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Solution

The fourth proportional to 5,421.76, 7,479.81 and 3,653.93 is: 5,040.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.76 : 7,479.81 = 3,653.93 : x
  2. Step 2: Convert to fraction form
    5,421.76/7,479.81 = 3,653.93/x
  3. Step 3: Cross multiply
    5,421.76x = 7,479.81 × 3,653.93
  4. Step 4: Simplify right side
    5,421.76x = 27,330,720.85
  5. Step 5: Solve for x
    x = 27,330,720.85/5,421.76
  6. Step 6: Final answer
    x = 5,040.93

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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.