Home / 5,420.67-7,479.01-3,404.31

Finding the Fourth Proportional to 5,420.67, 7,479.01 and 3,404.31

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Solution

The fourth proportional to 5,420.67, 7,479.01 and 3,404.31 is: 4,696.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.67 : 7,479.01 = 3,404.31 : x
  2. Step 2: Convert to fraction form
    5,420.67/7,479.01 = 3,404.31/x
  3. Step 3: Cross multiply
    5,420.67x = 7,479.01 × 3,404.31
  4. Step 4: Simplify right side
    5,420.67x = 25,460,844.74
  5. Step 5: Solve for x
    x = 25,460,844.74/5,420.67
  6. Step 6: Final answer
    x = 4,696.99

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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.