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Finding the Fourth Proportional to 5,424.15, 7,485 and 3,506.58

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Solution

The fourth proportional to 5,424.15, 7,485 and 3,506.58 is: 4,838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.15 : 7,485 = 3,506.58 : x
  2. Step 2: Convert to fraction form
    5,424.15/7,485 = 3,506.58/x
  3. Step 3: Cross multiply
    5,424.15x = 7,485 × 3,506.58
  4. Step 4: Simplify right side
    5,424.15x = 26,246,751.30
  5. Step 5: Solve for x
    x = 26,246,751.30/5,424.15
  6. Step 6: Final answer
    x = 4,838.87

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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.