Home / 1,429.02-2,141.70-648.99

Finding the Fourth Proportional to 1,429.02, 2,141.70 and 648.99

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Solution

The fourth proportional to 1,429.02, 2,141.70 and 648.99 is: 972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.02 : 2,141.70 = 648.99 : x
  2. Step 2: Convert to fraction form
    1,429.02/2,141.70 = 648.99/x
  3. Step 3: Cross multiply
    1,429.02x = 2,141.70 × 648.99
  4. Step 4: Simplify right side
    1,429.02x = 1,389,941.88
  5. Step 5: Solve for x
    x = 1,389,941.88/1,429.02
  6. Step 6: Final answer
    x = 972.65

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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.