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Finding the Fourth Proportional to 8,374.39, 12,574.64 and 7,217.40

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Solution

The fourth proportional to 8,374.39, 12,574.64 and 7,217.40 is: 10,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.39 : 12,574.64 = 7,217.40 : x
  2. Step 2: Convert to fraction form
    8,374.39/12,574.64 = 7,217.40/x
  3. Step 3: Cross multiply
    8,374.39x = 12,574.64 × 7,217.40
  4. Step 4: Simplify right side
    8,374.39x = 90,756,271.93
  5. Step 5: Solve for x
    x = 90,756,271.93/8,374.39
  6. Step 6: Final answer
    x = 10,837.36

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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.