Home / 2,079.30-3,117.27-847.30

Finding the Fourth Proportional to 2,079.30, 3,117.27 and 847.30

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Solution

The fourth proportional to 2,079.30, 3,117.27 and 847.30 is: 1,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.30 : 3,117.27 = 847.30 : x
  2. Step 2: Convert to fraction form
    2,079.30/3,117.27 = 847.30/x
  3. Step 3: Cross multiply
    2,079.30x = 3,117.27 × 847.30
  4. Step 4: Simplify right side
    2,079.30x = 2,641,262.87
  5. Step 5: Solve for x
    x = 2,641,262.87/2,079.30
  6. Step 6: Final answer
    x = 1,270.27

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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.