Home / 5,140.20-7,710.30-4,338.30

Finding the Fourth Proportional to 5,140.20, 7,710.30 and 4,338.30

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Solution

The fourth proportional to 5,140.20, 7,710.30 and 4,338.30 is: 6,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.20 : 7,710.30 = 4,338.30 : x
  2. Step 2: Convert to fraction form
    5,140.20/7,710.30 = 4,338.30/x
  3. Step 3: Cross multiply
    5,140.20x = 7,710.30 × 4,338.30
  4. Step 4: Simplify right side
    5,140.20x = 33,449,594.49
  5. Step 5: Solve for x
    x = 33,449,594.49/5,140.20
  6. Step 6: Final answer
    x = 6,507.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.