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Finding the Fourth Proportional to 8,934.51, 12,386.09 and 8,460.53

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Solution

The fourth proportional to 8,934.51, 12,386.09 and 8,460.53 is: 11,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,934.51 : 12,386.09 = 8,460.53 : x
  2. Step 2: Convert to fraction form
    8,934.51/12,386.09 = 8,460.53/x
  3. Step 3: Cross multiply
    8,934.51x = 12,386.09 × 8,460.53
  4. Step 4: Simplify right side
    8,934.51x = 104,792,824.10
  5. Step 5: Solve for x
    x = 104,792,824.10/8,934.51
  6. Step 6: Final answer
    x = 11,729.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.