Home / 1,429.76-2,141.28-697.04

Finding the Fourth Proportional to 1,429.76, 2,141.28 and 697.04

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Solution

The fourth proportional to 1,429.76, 2,141.28 and 697.04 is: 1,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.76 : 2,141.28 = 697.04 : x
  2. Step 2: Convert to fraction form
    1,429.76/2,141.28 = 697.04/x
  3. Step 3: Cross multiply
    1,429.76x = 2,141.28 × 697.04
  4. Step 4: Simplify right side
    1,429.76x = 1,492,557.81
  5. Step 5: Solve for x
    x = 1,492,557.81/1,429.76
  6. Step 6: Final answer
    x = 1,043.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.