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Finding the Fourth Proportional to 8,574.47, 12,858.49 and 2,950.55

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Solution

The fourth proportional to 8,574.47, 12,858.49 and 2,950.55 is: 4,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.47 : 12,858.49 = 2,950.55 : x
  2. Step 2: Convert to fraction form
    8,574.47/12,858.49 = 2,950.55/x
  3. Step 3: Cross multiply
    8,574.47x = 12,858.49 × 2,950.55
  4. Step 4: Simplify right side
    8,574.47x = 37,939,617.67
  5. Step 5: Solve for x
    x = 37,939,617.67/8,574.47
  6. Step 6: Final answer
    x = 4,424.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.