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Finding the Fourth Proportional to 1,672.17, 2,307.39 and 1,008.93

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Solution

The fourth proportional to 1,672.17, 2,307.39 and 1,008.93 is: 1,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.17 : 2,307.39 = 1,008.93 : x
  2. Step 2: Convert to fraction form
    1,672.17/2,307.39 = 1,008.93/x
  3. Step 3: Cross multiply
    1,672.17x = 2,307.39 × 1,008.93
  4. Step 4: Simplify right side
    1,672.17x = 2,327,994.99
  5. Step 5: Solve for x
    x = 2,327,994.99/1,672.17
  6. Step 6: Final answer
    x = 1,392.20

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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.