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Finding the Fourth Proportional to 2,169.93, 2,994.80 and 1,330.47

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Solution

The fourth proportional to 2,169.93, 2,994.80 and 1,330.47 is: 1,836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.93 : 2,994.80 = 1,330.47 : x
  2. Step 2: Convert to fraction form
    2,169.93/2,994.80 = 1,330.47/x
  3. Step 3: Cross multiply
    2,169.93x = 2,994.80 × 1,330.47
  4. Step 4: Simplify right side
    2,169.93x = 3,984,484.90
  5. Step 5: Solve for x
    x = 3,984,484.90/2,169.93
  6. Step 6: Final answer
    x = 1,836.23

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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.