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Finding the Fourth Proportional to 5,689.76, 7,853.13 and 3,696.86

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Solution

The fourth proportional to 5,689.76, 7,853.13 and 3,696.86 is: 5,102.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.76 : 7,853.13 = 3,696.86 : x
  2. Step 2: Convert to fraction form
    5,689.76/7,853.13 = 3,696.86/x
  3. Step 3: Cross multiply
    5,689.76x = 7,853.13 × 3,696.86
  4. Step 4: Simplify right side
    5,689.76x = 29,031,887.23
  5. Step 5: Solve for x
    x = 29,031,887.23/5,689.76
  6. Step 6: Final answer
    x = 5,102.48

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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.