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Finding the Fourth Proportional to 5,775.52, 7,970.21 and 3,122.93

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Solution

The fourth proportional to 5,775.52, 7,970.21 and 3,122.93 is: 4,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,775.52 : 7,970.21 = 3,122.93 : x
  2. Step 2: Convert to fraction form
    5,775.52/7,970.21 = 3,122.93/x
  3. Step 3: Cross multiply
    5,775.52x = 7,970.21 × 3,122.93
  4. Step 4: Simplify right side
    5,775.52x = 24,890,407.92
  5. Step 5: Solve for x
    x = 24,890,407.92/5,775.52
  6. Step 6: Final answer
    x = 4,309.64

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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.