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Finding the Fourth Proportional to 1,672.25, 2,307.81 and 973.62

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Solution

The fourth proportional to 1,672.25, 2,307.81 and 973.62 is: 1,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.25 : 2,307.81 = 973.62 : x
  2. Step 2: Convert to fraction form
    1,672.25/2,307.81 = 973.62/x
  3. Step 3: Cross multiply
    1,672.25x = 2,307.81 × 973.62
  4. Step 4: Simplify right side
    1,672.25x = 2,246,929.97
  5. Step 5: Solve for x
    x = 2,246,929.97/1,672.25
  6. Step 6: Final answer
    x = 1,343.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.