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Finding the Fourth Proportional to 6,422.64, 8,862.96 and 3,590

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Solution

The fourth proportional to 6,422.64, 8,862.96 and 3,590 is: 4,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.64 : 8,862.96 = 3,590 : x
  2. Step 2: Convert to fraction form
    6,422.64/8,862.96 = 3,590/x
  3. Step 3: Cross multiply
    6,422.64x = 8,862.96 × 3,590
  4. Step 4: Simplify right side
    6,422.64x = 31,818,026.40
  5. Step 5: Solve for x
    x = 31,818,026.40/6,422.64
  6. Step 6: Final answer
    x = 4,954.04

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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.