Home / 1,721.39-2,376.50-1,133.63

Finding the Fourth Proportional to 1,721.39, 2,376.50 and 1,133.63

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Solution

The fourth proportional to 1,721.39, 2,376.50 and 1,133.63 is: 1,565.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.39 : 2,376.50 = 1,133.63 : x
  2. Step 2: Convert to fraction form
    1,721.39/2,376.50 = 1,133.63/x
  3. Step 3: Cross multiply
    1,721.39x = 2,376.50 × 1,133.63
  4. Step 4: Simplify right side
    1,721.39x = 2,694,066.03
  5. Step 5: Solve for x
    x = 2,694,066.03/1,721.39
  6. Step 6: Final answer
    x = 1,565.05

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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.