Home / 5,422.40-7,483.39-3,407.21

Finding the Fourth Proportional to 5,422.40, 7,483.39 and 3,407.21

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Solution

The fourth proportional to 5,422.40, 7,483.39 and 3,407.21 is: 4,702.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.40 : 7,483.39 = 3,407.21 : x
  2. Step 2: Convert to fraction form
    5,422.40/7,483.39 = 3,407.21/x
  3. Step 3: Cross multiply
    5,422.40x = 7,483.39 × 3,407.21
  4. Step 4: Simplify right side
    5,422.40x = 25,497,435.31
  5. Step 5: Solve for x
    x = 25,497,435.31/5,422.40
  6. Step 6: Final answer
    x = 4,702.25

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Half scale
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Double scale
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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.