Home / 7,779.78-10,735.92-4,242.96

Finding the Fourth Proportional to 7,779.78, 10,735.92 and 4,242.96

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Solution

The fourth proportional to 7,779.78, 10,735.92 and 4,242.96 is: 5,855.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.78 : 10,735.92 = 4,242.96 : x
  2. Step 2: Convert to fraction form
    7,779.78/10,735.92 = 4,242.96/x
  3. Step 3: Cross multiply
    7,779.78x = 10,735.92 × 4,242.96
  4. Step 4: Simplify right side
    7,779.78x = 45,552,079.12
  5. Step 5: Solve for x
    x = 45,552,079.12/7,779.78
  6. Step 6: Final answer
    x = 5,855.19

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1.5x scale

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.