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Finding the Fourth Proportional to 5,358.42, 7,394.13 and 3,000.42

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Solution

The fourth proportional to 5,358.42, 7,394.13 and 3,000.42 is: 4,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.42 : 7,394.13 = 3,000.42 : x
  2. Step 2: Convert to fraction form
    5,358.42/7,394.13 = 3,000.42/x
  3. Step 3: Cross multiply
    5,358.42x = 7,394.13 × 3,000.42
  4. Step 4: Simplify right side
    5,358.42x = 22,185,495.53
  5. Step 5: Solve for x
    x = 22,185,495.53/5,358.42
  6. Step 6: Final answer
    x = 4,140.31

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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.