Home / 1,453.05-2,179.65-631.35

Finding the Fourth Proportional to 1,453.05, 2,179.65 and 631.35

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Solution

The fourth proportional to 1,453.05, 2,179.65 and 631.35 is: 947.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.05 : 2,179.65 = 631.35 : x
  2. Step 2: Convert to fraction form
    1,453.05/2,179.65 = 631.35/x
  3. Step 3: Cross multiply
    1,453.05x = 2,179.65 × 631.35
  4. Step 4: Simplify right side
    1,453.05x = 1,376,122.03
  5. Step 5: Solve for x
    x = 1,376,122.03/1,453.05
  6. Step 6: Final answer
    x = 947.06

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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.