Home / 7,780.24-11,659.20-4,856.80

Finding the Fourth Proportional to 7,780.24, 11,659.20 and 4,856.80

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Solution

The fourth proportional to 7,780.24, 11,659.20 and 4,856.80 is: 7,278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.24 : 11,659.20 = 4,856.80 : x
  2. Step 2: Convert to fraction form
    7,780.24/11,659.20 = 4,856.80/x
  3. Step 3: Cross multiply
    7,780.24x = 11,659.20 × 4,856.80
  4. Step 4: Simplify right side
    7,780.24x = 56,626,402.56
  5. Step 5: Solve for x
    x = 56,626,402.56/7,780.24
  6. Step 6: Final answer
    x = 7,278.23

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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.