Home / 1,449.03-2,172.47-871.77

Finding the Fourth Proportional to 1,449.03, 2,172.47 and 871.77

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Solution

The fourth proportional to 1,449.03, 2,172.47 and 871.77 is: 1,307.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.03 : 2,172.47 = 871.77 : x
  2. Step 2: Convert to fraction form
    1,449.03/2,172.47 = 871.77/x
  3. Step 3: Cross multiply
    1,449.03x = 2,172.47 × 871.77
  4. Step 4: Simplify right side
    1,449.03x = 1,893,889.81
  5. Step 5: Solve for x
    x = 1,893,889.81/1,449.03
  6. Step 6: Final answer
    x = 1,307.01

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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.