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Finding the Fourth Proportional to 8,460.01, 12,690 and 4,302.88

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Solution

The fourth proportional to 8,460.01, 12,690 and 4,302.88 is: 6,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,460.01 : 12,690 = 4,302.88 : x
  2. Step 2: Convert to fraction form
    8,460.01/12,690 = 4,302.88/x
  3. Step 3: Cross multiply
    8,460.01x = 12,690 × 4,302.88
  4. Step 4: Simplify right side
    8,460.01x = 54,603,547.20
  5. Step 5: Solve for x
    x = 54,603,547.20/8,460.01
  6. Step 6: Final answer
    x = 6,454.31

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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.