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Finding the Fourth Proportional to 8,064.80, 12,074.52 and 5,135.84

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Solution

The fourth proportional to 8,064.80, 12,074.52 and 5,135.84 is: 7,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,064.80 : 12,074.52 = 5,135.84 : x
  2. Step 2: Convert to fraction form
    8,064.80/12,074.52 = 5,135.84/x
  3. Step 3: Cross multiply
    8,064.80x = 12,074.52 × 5,135.84
  4. Step 4: Simplify right side
    8,064.80x = 62,012,802.80
  5. Step 5: Solve for x
    x = 62,012,802.80/8,064.80
  6. Step 6: Final answer
    x = 7,689.32

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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.