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Finding the Fourth Proportional to 8,985.14, 12,386.62 and 6,324.28

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Solution

The fourth proportional to 8,985.14, 12,386.62 and 6,324.28 is: 8,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.14 : 12,386.62 = 6,324.28 : x
  2. Step 2: Convert to fraction form
    8,985.14/12,386.62 = 6,324.28/x
  3. Step 3: Cross multiply
    8,985.14x = 12,386.62 × 6,324.28
  4. Step 4: Simplify right side
    8,985.14x = 78,336,453.13
  5. Step 5: Solve for x
    x = 78,336,453.13/8,985.14
  6. Step 6: Final answer
    x = 8,718.45

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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.