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Finding the Fourth Proportional to 8,443.60, 11,651.08 and 5,085.52

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Solution

The fourth proportional to 8,443.60, 11,651.08 and 5,085.52 is: 7,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.60 : 11,651.08 = 5,085.52 : x
  2. Step 2: Convert to fraction form
    8,443.60/11,651.08 = 5,085.52/x
  3. Step 3: Cross multiply
    8,443.60x = 11,651.08 × 5,085.52
  4. Step 4: Simplify right side
    8,443.60x = 59,251,800.36
  5. Step 5: Solve for x
    x = 59,251,800.36/8,443.60
  6. Step 6: Final answer
    x = 7,017.36

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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.