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Finding the Fourth Proportional to 1,437.11, 1,983.08 and 807.63

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Solution

The fourth proportional to 1,437.11, 1,983.08 and 807.63 is: 1,114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.11 : 1,983.08 = 807.63 : x
  2. Step 2: Convert to fraction form
    1,437.11/1,983.08 = 807.63/x
  3. Step 3: Cross multiply
    1,437.11x = 1,983.08 × 807.63
  4. Step 4: Simplify right side
    1,437.11x = 1,601,590.86
  5. Step 5: Solve for x
    x = 1,601,590.86/1,437.11
  6. Step 6: Final answer
    x = 1,114.46

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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.