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Finding the Fourth Proportional to 1,437.63, 1,983.86 and 808.19

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Solution

The fourth proportional to 1,437.63, 1,983.86 and 808.19 is: 1,115.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.63 : 1,983.86 = 808.19 : x
  2. Step 2: Convert to fraction form
    1,437.63/1,983.86 = 808.19/x
  3. Step 3: Cross multiply
    1,437.63x = 1,983.86 × 808.19
  4. Step 4: Simplify right side
    1,437.63x = 1,603,335.81
  5. Step 5: Solve for x
    x = 1,603,335.81/1,437.63
  6. Step 6: Final answer
    x = 1,115.26

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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.