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Finding the Fourth Proportional to 8,693.68, 11,995 and 5,157.68

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Solution

The fourth proportional to 8,693.68, 11,995 and 5,157.68 is: 7,116.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.68 : 11,995 = 5,157.68 : x
  2. Step 2: Convert to fraction form
    8,693.68/11,995 = 5,157.68/x
  3. Step 3: Cross multiply
    8,693.68x = 11,995 × 5,157.68
  4. Step 4: Simplify right side
    8,693.68x = 61,866,371.60
  5. Step 5: Solve for x
    x = 61,866,371.60/8,693.68
  6. Step 6: Final answer
    x = 7,116.25

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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.