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Finding the Fourth Proportional to 1,802.68, 2,485.02 and 1,429

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Solution

The fourth proportional to 1,802.68, 2,485.02 and 1,429 is: 1,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.68 : 2,485.02 = 1,429 : x
  2. Step 2: Convert to fraction form
    1,802.68/2,485.02 = 1,429/x
  3. Step 3: Cross multiply
    1,802.68x = 2,485.02 × 1,429
  4. Step 4: Simplify right side
    1,802.68x = 3,551,093.58
  5. Step 5: Solve for x
    x = 3,551,093.58/1,802.68
  6. Step 6: Final answer
    x = 1,969.90

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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.