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Finding the Fourth Proportional to 2,429, 3,643.52 and 869.08

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Solution

The fourth proportional to 2,429, 3,643.52 and 869.08 is: 1,303.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429 : 3,643.52 = 869.08 : x
  2. Step 2: Convert to fraction form
    2,429/3,643.52 = 869.08/x
  3. Step 3: Cross multiply
    2,429x = 3,643.52 × 869.08
  4. Step 4: Simplify right side
    2,429x = 3,166,510.36
  5. Step 5: Solve for x
    x = 3,166,510.36/2,429
  6. Step 6: Final answer
    x = 1,303.63

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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.