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Finding the Fourth Proportional to 8,357.16, 12,524.81 and 3,421.17

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Solution

The fourth proportional to 8,357.16, 12,524.81 and 3,421.17 is: 5,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.16 : 12,524.81 = 3,421.17 : x
  2. Step 2: Convert to fraction form
    8,357.16/12,524.81 = 3,421.17/x
  3. Step 3: Cross multiply
    8,357.16x = 12,524.81 × 3,421.17
  4. Step 4: Simplify right side
    8,357.16x = 42,849,504.23
  5. Step 5: Solve for x
    x = 42,849,504.23/8,357.16
  6. Step 6: Final answer
    x = 5,127.28

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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.