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Finding the Fourth Proportional to 5,358.45, 7,394.63 and 3,000.45

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Solution

The fourth proportional to 5,358.45, 7,394.63 and 3,000.45 is: 4,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.45 : 7,394.63 = 3,000.45 : x
  2. Step 2: Convert to fraction form
    5,358.45/7,394.63 = 3,000.45/x
  3. Step 3: Cross multiply
    5,358.45x = 7,394.63 × 3,000.45
  4. Step 4: Simplify right side
    5,358.45x = 22,187,202.58
  5. Step 5: Solve for x
    x = 22,187,202.58/5,358.45
  6. Step 6: Final answer
    x = 4,140.60

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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.