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Finding the Fourth Proportional to 8,671.05, 12,985.61 and 4,962.03

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Solution

The fourth proportional to 8,671.05, 12,985.61 and 4,962.03 is: 7,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.05 : 12,985.61 = 4,962.03 : x
  2. Step 2: Convert to fraction form
    8,671.05/12,985.61 = 4,962.03/x
  3. Step 3: Cross multiply
    8,671.05x = 12,985.61 × 4,962.03
  4. Step 4: Simplify right side
    8,671.05x = 64,435,036.40
  5. Step 5: Solve for x
    x = 64,435,036.40/8,671.05
  6. Step 6: Final answer
    x = 7,431.05

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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.