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Finding the Fourth Proportional to 8,460.10, 12,690.51 and 2,616.82

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Solution

The fourth proportional to 8,460.10, 12,690.51 and 2,616.82 is: 3,925.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460.10 : 12,690.51 = 2,616.82 : x
  2. Step 2: Convert to fraction form
    8,460.10/12,690.51 = 2,616.82/x
  3. Step 3: Cross multiply
    8,460.10x = 12,690.51 × 2,616.82
  4. Step 4: Simplify right side
    8,460.10x = 33,208,780.38
  5. Step 5: Solve for x
    x = 33,208,780.38/8,460.10
  6. Step 6: Final answer
    x = 3,925.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.