Home / 7,813.24-10,779.14-4,979.86

Finding the Fourth Proportional to 7,813.24, 10,779.14 and 4,979.86

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Solution

The fourth proportional to 7,813.24, 10,779.14 and 4,979.86 is: 6,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.24 : 10,779.14 = 4,979.86 : x
  2. Step 2: Convert to fraction form
    7,813.24/10,779.14 = 4,979.86/x
  3. Step 3: Cross multiply
    7,813.24x = 10,779.14 × 4,979.86
  4. Step 4: Simplify right side
    7,813.24x = 53,678,608.12
  5. Step 5: Solve for x
    x = 53,678,608.12/7,813.24
  6. Step 6: Final answer
    x = 6,870.21

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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.