Home / 1,680.10-2,520.35-706.07

Finding the Fourth Proportional to 1,680.10, 2,520.35 and 706.07

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Solution

The fourth proportional to 1,680.10, 2,520.35 and 706.07 is: 1,059.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.10 : 2,520.35 = 706.07 : x
  2. Step 2: Convert to fraction form
    1,680.10/2,520.35 = 706.07/x
  3. Step 3: Cross multiply
    1,680.10x = 2,520.35 × 706.07
  4. Step 4: Simplify right side
    1,680.10x = 1,779,548.94
  5. Step 5: Solve for x
    x = 1,779,548.94/1,680.10
  6. Step 6: Final answer
    x = 1,059.19

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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.