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Finding the Fourth Proportional to 8,345.64, 12,518.87 and 2,798.42

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Solution

The fourth proportional to 8,345.64, 12,518.87 and 2,798.42 is: 4,197.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.64 : 12,518.87 = 2,798.42 : x
  2. Step 2: Convert to fraction form
    8,345.64/12,518.87 = 2,798.42/x
  3. Step 3: Cross multiply
    8,345.64x = 12,518.87 × 2,798.42
  4. Step 4: Simplify right side
    8,345.64x = 35,033,073.49
  5. Step 5: Solve for x
    x = 35,033,073.49/8,345.64
  6. Step 6: Final answer
    x = 4,197.77

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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.