Home / 5,390.20-7,436.28-4,330.63

Finding the Fourth Proportional to 5,390.20, 7,436.28 and 4,330.63

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Solution

The fourth proportional to 5,390.20, 7,436.28 and 4,330.63 is: 5,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.20 : 7,436.28 = 4,330.63 : x
  2. Step 2: Convert to fraction form
    5,390.20/7,436.28 = 4,330.63/x
  3. Step 3: Cross multiply
    5,390.20x = 7,436.28 × 4,330.63
  4. Step 4: Simplify right side
    5,390.20x = 32,203,777.26
  5. Step 5: Solve for x
    x = 32,203,777.26/5,390.20
  6. Step 6: Final answer
    x = 5,974.51

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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.