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Finding the Fourth Proportional to 5,199.90, 7,139.58 and 5,064.54

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Solution

The fourth proportional to 5,199.90, 7,139.58 and 5,064.54 is: 6,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.90 : 7,139.58 = 5,064.54 : x
  2. Step 2: Convert to fraction form
    5,199.90/7,139.58 = 5,064.54/x
  3. Step 3: Cross multiply
    5,199.90x = 7,139.58 × 5,064.54
  4. Step 4: Simplify right side
    5,199.90x = 36,158,688.49
  5. Step 5: Solve for x
    x = 36,158,688.49/5,199.90
  6. Step 6: Final answer
    x = 6,953.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.