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Finding the Fourth Proportional to 9,718.70, 13,404.70 and 6,356.12

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Solution

The fourth proportional to 9,718.70, 13,404.70 and 6,356.12 is: 8,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,718.70 : 13,404.70 = 6,356.12 : x
  2. Step 2: Convert to fraction form
    9,718.70/13,404.70 = 6,356.12/x
  3. Step 3: Cross multiply
    9,718.70x = 13,404.70 × 6,356.12
  4. Step 4: Simplify right side
    9,718.70x = 85,201,881.76
  5. Step 5: Solve for x
    x = 85,201,881.76/9,718.70
  6. Step 6: Final answer
    x = 8,766.80

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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.