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Finding the Fourth Proportional to 1,995.60, 2,754.19 and 1,145.19

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Solution

The fourth proportional to 1,995.60, 2,754.19 and 1,145.19 is: 1,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.60 : 2,754.19 = 1,145.19 : x
  2. Step 2: Convert to fraction form
    1,995.60/2,754.19 = 1,145.19/x
  3. Step 3: Cross multiply
    1,995.60x = 2,754.19 × 1,145.19
  4. Step 4: Simplify right side
    1,995.60x = 3,154,051.35
  5. Step 5: Solve for x
    x = 3,154,051.35/1,995.60
  6. Step 6: Final answer
    x = 1,580.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.