Home / 5,123.26-7,680.08-2,779.83

Finding the Fourth Proportional to 5,123.26, 7,680.08 and 2,779.83

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Solution

The fourth proportional to 5,123.26, 7,680.08 and 2,779.83 is: 4,167.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.26 : 7,680.08 = 2,779.83 : x
  2. Step 2: Convert to fraction form
    5,123.26/7,680.08 = 2,779.83/x
  3. Step 3: Cross multiply
    5,123.26x = 7,680.08 × 2,779.83
  4. Step 4: Simplify right side
    5,123.26x = 21,349,316.79
  5. Step 5: Solve for x
    x = 21,349,316.79/5,123.26
  6. Step 6: Final answer
    x = 4,167.14

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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.