Home / 5,412.36-7,470-3,422.28

Finding the Fourth Proportional to 5,412.36, 7,470 and 3,422.28

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Solution

The fourth proportional to 5,412.36, 7,470 and 3,422.28 is: 4,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.36 : 7,470 = 3,422.28 : x
  2. Step 2: Convert to fraction form
    5,412.36/7,470 = 3,422.28/x
  3. Step 3: Cross multiply
    5,412.36x = 7,470 × 3,422.28
  4. Step 4: Simplify right side
    5,412.36x = 25,564,431.60
  5. Step 5: Solve for x
    x = 25,564,431.60/5,412.36
  6. Step 6: Final answer
    x = 4,723.34

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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.