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Finding the Fourth Proportional to 1,507.90, 2,080.84 and 844.69

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Solution

The fourth proportional to 1,507.90, 2,080.84 and 844.69 is: 1,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.90 : 2,080.84 = 844.69 : x
  2. Step 2: Convert to fraction form
    1,507.90/2,080.84 = 844.69/x
  3. Step 3: Cross multiply
    1,507.90x = 2,080.84 × 844.69
  4. Step 4: Simplify right side
    1,507.90x = 1,757,664.74
  5. Step 5: Solve for x
    x = 1,757,664.74/1,507.90
  6. Step 6: Final answer
    x = 1,165.64

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Half scale
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Double scale
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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.