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Finding the Fourth Proportional to 8,600.63, 11,875.70 and 6,916.64

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Solution

The fourth proportional to 8,600.63, 11,875.70 and 6,916.64 is: 9,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.63 : 11,875.70 = 6,916.64 : x
  2. Step 2: Convert to fraction form
    8,600.63/11,875.70 = 6,916.64/x
  3. Step 3: Cross multiply
    8,600.63x = 11,875.70 × 6,916.64
  4. Step 4: Simplify right side
    8,600.63x = 82,139,907.06
  5. Step 5: Solve for x
    x = 82,139,907.06/8,600.63
  6. Step 6: Final answer
    x = 9,550.45

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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.