Home / 7,856.12-11,784.90-2,012.78

Finding the Fourth Proportional to 7,856.12, 11,784.90 and 2,012.78

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Solution

The fourth proportional to 7,856.12, 11,784.90 and 2,012.78 is: 3,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.12 : 11,784.90 = 2,012.78 : x
  2. Step 2: Convert to fraction form
    7,856.12/11,784.90 = 2,012.78/x
  3. Step 3: Cross multiply
    7,856.12x = 11,784.90 × 2,012.78
  4. Step 4: Simplify right side
    7,856.12x = 23,720,411.02
  5. Step 5: Solve for x
    x = 23,720,411.02/7,856.12
  6. Step 6: Final answer
    x = 3,019.35

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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.