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Finding the Fourth Proportional to 2,894.52, 3,992.88 and 1,715.40

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Solution

The fourth proportional to 2,894.52, 3,992.88 and 1,715.40 is: 2,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.52 : 3,992.88 = 1,715.40 : x
  2. Step 2: Convert to fraction form
    2,894.52/3,992.88 = 1,715.40/x
  3. Step 3: Cross multiply
    2,894.52x = 3,992.88 × 1,715.40
  4. Step 4: Simplify right side
    2,894.52x = 6,849,386.35
  5. Step 5: Solve for x
    x = 6,849,386.35/2,894.52
  6. Step 6: Final answer
    x = 2,366.33

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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.