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Finding the Fourth Proportional to 1,716.39, 2,368.58 and 970.43

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Solution

The fourth proportional to 1,716.39, 2,368.58 and 970.43 is: 1,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.39 : 2,368.58 = 970.43 : x
  2. Step 2: Convert to fraction form
    1,716.39/2,368.58 = 970.43/x
  3. Step 3: Cross multiply
    1,716.39x = 2,368.58 × 970.43
  4. Step 4: Simplify right side
    1,716.39x = 2,298,524.39
  5. Step 5: Solve for x
    x = 2,298,524.39/1,716.39
  6. Step 6: Final answer
    x = 1,339.16

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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.