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Finding the Fourth Proportional to 1,905.82, 2,630.13 and 1,159.65

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Solution

The fourth proportional to 1,905.82, 2,630.13 and 1,159.65 is: 1,600.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.82 : 2,630.13 = 1,159.65 : x
  2. Step 2: Convert to fraction form
    1,905.82/2,630.13 = 1,159.65/x
  3. Step 3: Cross multiply
    1,905.82x = 2,630.13 × 1,159.65
  4. Step 4: Simplify right side
    1,905.82x = 3,050,030.25
  5. Step 5: Solve for x
    x = 3,050,030.25/1,905.82
  6. Step 6: Final answer
    x = 1,600.38

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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.