Home / 5,353.30-7,388.34-3,115.90

Finding the Fourth Proportional to 5,353.30, 7,388.34 and 3,115.90

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Solution

The fourth proportional to 5,353.30, 7,388.34 and 3,115.90 is: 4,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,353.30 : 7,388.34 = 3,115.90 : x
  2. Step 2: Convert to fraction form
    5,353.30/7,388.34 = 3,115.90/x
  3. Step 3: Cross multiply
    5,353.30x = 7,388.34 × 3,115.90
  4. Step 4: Simplify right side
    5,353.30x = 23,021,328.61
  5. Step 5: Solve for x
    x = 23,021,328.61/5,353.30
  6. Step 6: Final answer
    x = 4,300.40

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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.