Home / 1,680.10-2,318.49-1,058.50

Finding the Fourth Proportional to 1,680.10, 2,318.49 and 1,058.50

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Solution

The fourth proportional to 1,680.10, 2,318.49 and 1,058.50 is: 1,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.10 : 2,318.49 = 1,058.50 : x
  2. Step 2: Convert to fraction form
    1,680.10/2,318.49 = 1,058.50/x
  3. Step 3: Cross multiply
    1,680.10x = 2,318.49 × 1,058.50
  4. Step 4: Simplify right side
    1,680.10x = 2,454,121.67
  5. Step 5: Solve for x
    x = 2,454,121.67/1,680.10
  6. Step 6: Final answer
    x = 1,460.70

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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.