Home / 9,131.02-13,698.58-2,891.40

Finding the Fourth Proportional to 9,131.02, 13,698.58 and 2,891.40

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Solution

The fourth proportional to 9,131.02, 13,698.58 and 2,891.40 is: 4,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.02 : 13,698.58 = 2,891.40 : x
  2. Step 2: Convert to fraction form
    9,131.02/13,698.58 = 2,891.40/x
  3. Step 3: Cross multiply
    9,131.02x = 13,698.58 × 2,891.40
  4. Step 4: Simplify right side
    9,131.02x = 39,608,059.76
  5. Step 5: Solve for x
    x = 39,608,059.76/9,131.02
  6. Step 6: Final answer
    x = 4,337.75

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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.