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Finding the Fourth Proportional to 1,420.29, 1,959.98 and 799.29

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Solution

The fourth proportional to 1,420.29, 1,959.98 and 799.29 is: 1,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.29 : 1,959.98 = 799.29 : x
  2. Step 2: Convert to fraction form
    1,420.29/1,959.98 = 799.29/x
  3. Step 3: Cross multiply
    1,420.29x = 1,959.98 × 799.29
  4. Step 4: Simplify right side
    1,420.29x = 1,566,588.42
  5. Step 5: Solve for x
    x = 1,566,588.42/1,420.29
  6. Step 6: Final answer
    x = 1,103.01

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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.