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Finding the Fourth Proportional to 5,689.63, 7,848.48 and 3,561.47

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Solution

The fourth proportional to 5,689.63, 7,848.48 and 3,561.47 is: 4,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.63 : 7,848.48 = 3,561.47 : x
  2. Step 2: Convert to fraction form
    5,689.63/7,848.48 = 3,561.47/x
  3. Step 3: Cross multiply
    5,689.63x = 7,848.48 × 3,561.47
  4. Step 4: Simplify right side
    5,689.63x = 27,952,117.16
  5. Step 5: Solve for x
    x = 27,952,117.16/5,689.63
  6. Step 6: Final answer
    x = 4,912.82

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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.