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Finding the Fourth Proportional to 8,533.90, 12,801.30 and 2,987.02

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Solution

The fourth proportional to 8,533.90, 12,801.30 and 2,987.02 is: 4,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,533.90 : 12,801.30 = 2,987.02 : x
  2. Step 2: Convert to fraction form
    8,533.90/12,801.30 = 2,987.02/x
  3. Step 3: Cross multiply
    8,533.90x = 12,801.30 × 2,987.02
  4. Step 4: Simplify right side
    8,533.90x = 38,237,739.13
  5. Step 5: Solve for x
    x = 38,237,739.13/8,533.90
  6. Step 6: Final answer
    x = 4,480.69

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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.