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Finding the Fourth Proportional to 2,927.95, 4,392.17 and 980.17

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Solution

The fourth proportional to 2,927.95, 4,392.17 and 980.17 is: 1,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.95 : 4,392.17 = 980.17 : x
  2. Step 2: Convert to fraction form
    2,927.95/4,392.17 = 980.17/x
  3. Step 3: Cross multiply
    2,927.95x = 4,392.17 × 980.17
  4. Step 4: Simplify right side
    2,927.95x = 4,305,073.27
  5. Step 5: Solve for x
    x = 4,305,073.27/2,927.95
  6. Step 6: Final answer
    x = 1,470.34

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1.5x scale

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.