Home / 1,680.95-2,520.06-1,317.36

Finding the Fourth Proportional to 1,680.95, 2,520.06 and 1,317.36

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Solution

The fourth proportional to 1,680.95, 2,520.06 and 1,317.36 is: 1,974.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.95 : 2,520.06 = 1,317.36 : x
  2. Step 2: Convert to fraction form
    1,680.95/2,520.06 = 1,317.36/x
  3. Step 3: Cross multiply
    1,680.95x = 2,520.06 × 1,317.36
  4. Step 4: Simplify right side
    1,680.95x = 3,319,838.16
  5. Step 5: Solve for x
    x = 3,319,838.16/1,680.95
  6. Step 6: Final answer
    x = 1,974.97

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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.