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Finding the Fourth Proportional to 2,313.90, 3,468.90 and 1,080.66

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Solution

The fourth proportional to 2,313.90, 3,468.90 and 1,080.66 is: 1,620.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.90 : 3,468.90 = 1,080.66 : x
  2. Step 2: Convert to fraction form
    2,313.90/3,468.90 = 1,080.66/x
  3. Step 3: Cross multiply
    2,313.90x = 3,468.90 × 1,080.66
  4. Step 4: Simplify right side
    2,313.90x = 3,748,701.47
  5. Step 5: Solve for x
    x = 3,748,701.47/2,313.90
  6. Step 6: Final answer
    x = 1,620.08

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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.